BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:MAGIC - how Matter's extreme phases can be revealed in Gravitation al wave observations and in relativistic heavy Ion Collision experiments DTSTART;VALUE=DATE-TIME:20181205T150000Z DTEND;VALUE=DATE-TIME:20181205T154500Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1175@indico.tlabs.ac.za DESCRIPTION:Speakers: Horst Stoecker (GSI\, Goethe Universität and FiAS)\ nThis talk combines a survey of our recent advancements in two rather dist inct fields\, which reveal - on first sight - a surprising similarity of b oth\, namely relativistic collisions of nuclei and of neutron stars.\n\nRe cently\, the group at FiAS and at Goethe University discovered that the em itted gravitational waves\, as predicted from general relativistic magneto - hydrodynamics from binary neutron star merger - calculations\, are extre mely sensitive to the appearance of quark matter and the stiffnes of the e quation of state of QCD Matter in the inner cores of the two colliding Neu tron Stars\, as also in their gravitational collapse to one black hole. Th is is a new observable messenger from outer space\, which does provide dir ect signals for the phase structure of strongly interacting QCD matter at high baryon density and high temperature.\n\nThose astrophysically created extremes of thermodynamics do match \, to within 20% \, the values of te mperatures which we find in relativistic hydrodynamics and transport theor y of heavy ion collisions at the existing laboratories like LHC\, SpS at C ern\, RHIC at Brookhaven\, and HaDes - SiS18 at GSi and at the NICA and FA IR accelerators under construction\, if though at quite different rapidity windows\, impact parameters and bombarding energies of the heavy nuclear systems.\n\nWe demonstrate how the gravitational wave signals from future advanced LIGO-Virgo - to radiowave signals from SKA-events can be combined with the high multiplicity fluctuation - and flow measurements in heavy i on detectors in the lab to pin down the EoS and the phase structure of den se matter.\n\nhttps://indico.tlabs.ac.za/event/75/contributions/1175/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1175/ END:VEVENT BEGIN:VEVENT SUMMARY:Observation of Higgs in bb channel from ATLAS and CMS DTSTART;VALUE=DATE-TIME:20181206T130000Z DTEND;VALUE=DATE-TIME:20181206T132000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1206@indico.tlabs.ac.za DESCRIPTION:Speakers: Camilla Vittori ()\nMeasurements of Higgs boson deca ys to fermions are important to understand the mass generation of fermions . In the Standard Model\, the H->bb decay is expected to account for almos t 60% of the Higgs branching fraction\, but experimentally it is difficult to observe because of overwhelming backgrounds from Standard Model proces ses. For this reason\, the search for the H->bb decay is performed exploit ing the more distinct signature of Higgs boson production in association w ith a leptonically decaying vector boson (V). This talk describes the sear ch for the VH(->bb) process using pp collision data taken at 13 TeV\, and presents also the results from the combination with the search for H->bb u sing other production processes and center-of-mass energies\, leading to t he observation of the H->bb decay.\n\nhttps://indico.tlabs.ac.za/event/75/ contributions/1206/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1206/ END:VEVENT BEGIN:VEVENT SUMMARY:Quarkonium results in pp and p–Pb collisions from ALICE at the L HC DTSTART;VALUE=DATE-TIME:20181206T130000Z DTEND;VALUE=DATE-TIME:20181206T132000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1268@indico.tlabs.ac.za DESCRIPTION:Speakers: Antoine Lardeux (University of Oslo)\nhttps://indico .tlabs.ac.za/event/75/contributions/1268/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1268/ END:VEVENT BEGIN:VEVENT SUMMARY:A Comparison of p-p\, p-Pb\, Pb-Pb Collisions in the Thermal Model : Multiplicity Dependence of Thermal Parameters DTSTART;VALUE=DATE-TIME:20181206T134000Z DTEND;VALUE=DATE-TIME:20181206T140000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1269@indico.tlabs.ac.za DESCRIPTION:Speakers: Jean Cleymans (University of Cape Town)\nhttps://ind ico.tlabs.ac.za/event/75/contributions/1269/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1269/ END:VEVENT BEGIN:VEVENT SUMMARY:LHC phase one ALICE upgrades: the inner tracker silicon pixel det ector DTSTART;VALUE=DATE-TIME:20181206T152000Z DTEND;VALUE=DATE-TIME:20181206T154000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1270@indico.tlabs.ac.za DESCRIPTION:Speakers: Federico Ronchetti (INFN Laboratori Nazionali di Fra scati)\nhttps://indico.tlabs.ac.za/event/75/contributions/1270/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1270/ END:VEVENT BEGIN:VEVENT SUMMARY:Boosted object tagging in ATLAS and CMS DTSTART;VALUE=DATE-TIME:20181204T134000Z DTEND;VALUE=DATE-TIME:20181204T140000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1170@indico.tlabs.ac.za DESCRIPTION:Speakers: Pierre-Antoine Delsart (LPSC/CNRS (Grenoble\, FR))\n At the energies of the Large Hardon Collider vector bosons\, higgs bosons and top quarks are often produced with momenta significantly higher than t heir rest mass. This means that if they decay hadronically their decay pro ducts boosted such that they fall in a small area in eta-phi. The identifi cation of these interesting objects over the large backgrounds of jets fro m QCD processes poses an interesting reconstruction challenge. An efficien t way to reconstruct these is to use large-radius jets. As well as the mas s of the large-radius jet\, sub-structure variables that attempt to separa te the hard multi-prong structure of these interesting jets from the QCD r adiation pattern are used. Recently\, machine learning techniques have bee n employed to fully exploit the correlations in these variables and the de tector's capabilities. Measuring the efficiency of identifying these objec ts in data and the background rejection that can be achieved has been a pr imary focus such that these complicated taggers can be used in analyses. F inally the sensitivity of these tagging techniques to pile-up -- additiona l simultaneous collisions with the collisions of interest -- will be shown along with the various methods used to mitigate such effects.\n\nhttps:// indico.tlabs.ac.za/event/75/contributions/1170/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1170/ END:VEVENT BEGIN:VEVENT SUMMARY:iThemba LABS student prize winner talk DTSTART;VALUE=DATE-TIME:20181207T103500Z DTEND;VALUE=DATE-TIME:20181207T104500Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1271@indico.tlabs.ac.za DESCRIPTION:https://indico.tlabs.ac.za/event/75/contributions/1271/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1271/ END:VEVENT BEGIN:VEVENT SUMMARY:Diboson measurements from ATLAS and CMS DTSTART;VALUE=DATE-TIME:20181203T140000Z DTEND;VALUE=DATE-TIME:20181203T142000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1188@indico.tlabs.ac.za DESCRIPTION:Speakers: Benjamin Freund (Université de Montréal)\nThe gaug e structure of the electroweak sector can be tested by studying diboson fi nal states in proton proton collisions\, involving triple and quadratic ga uge couplings. In this talk\, we will first review the latest precision me asurements of diboson final states at a center of mass energy of 13 TeV as well as their interpretation in the view of effective field theories. Mor eover\, we will discuss the first observation of vector boson scattering e vents with WW and WZ final states by the ATLAS and CMS collaborations. Spe cial focus will be drawn on the comparison to various theory predictions o n the fiducial cross-sections of these processes.\n\nhttps://indico.tlabs. ac.za/event/75/contributions/1188/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1188/ END:VEVENT BEGIN:VEVENT SUMMARY:Summary of BSM Searches at the LHC DTSTART;VALUE=DATE-TIME:20181204T084500Z DTEND;VALUE=DATE-TIME:20181204T093000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1187@indico.tlabs.ac.za DESCRIPTION:Speakers: Kathleen Whalen ()\nDespite the successes of the Sta ndard Model\, there remain a number of unanswered questions about the natu re of the universe\, including what are dark matter and dark energy\, why is gravity so weak\, what is the origin of the matter/anti-matter asymmetr y of the universe\, and why does the Higgs boson have its particular mass.  ATLAS and CMS conduct extensive search programs for proposed extensions to the Standard Model that might help to answer some of these questions\, and others.  While some of these new physics models would appear in trad itional searches for resonances or as excesses of events with large missin g transverse momentum\, a growing number of them exploit unconventional de tector signatures like disappearing tracks\, displaced vertices\, and trac ks with large energy loss.  This talk presents the latest results from th e search program\, using Run 2 data from the LHC.\n\nhttps://indico.tlabs. ac.za/event/75/contributions/1187/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1187/ END:VEVENT BEGIN:VEVENT SUMMARY:Hydrodynamic flow in small systems? DTSTART;VALUE=DATE-TIME:20181203T130000Z DTEND;VALUE=DATE-TIME:20181203T132000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1186@indico.tlabs.ac.za DESCRIPTION:Speakers: Ulrich Heinz (The Ohio State University)\nThe "unrea sonable effectiveness" of relativistic fluid dynamics in describing high e nergy heavy-ion and even proton-proton collisions will be demonstrated and discussed. Several recent ideas of optimizing relativistic fluid dynamics for the specific challenges posed by such collisions will be presented\, and some thoughts will be offered why the framework works better than orig inally expected. I will also address the unresolved question where exactly hydrodynamics breaks down\, and why.\n\nhttps://indico.tlabs.ac.za/event/ 75/contributions/1186/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1186/ END:VEVENT BEGIN:VEVENT SUMMARY:Closing Remarks DTSTART;VALUE=DATE-TIME:20181207T105500Z DTEND;VALUE=DATE-TIME:20181207T111000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1272@indico.tlabs.ac.za DESCRIPTION:https://indico.tlabs.ac.za/event/75/contributions/1272/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1272/ END:VEVENT BEGIN:VEVENT SUMMARY:Results on Top Physics by ATLAS\, CMS and LHCb DTSTART;VALUE=DATE-TIME:20181206T140000Z DTEND;VALUE=DATE-TIME:20181206T142000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1189@indico.tlabs.ac.za DESCRIPTION:Speakers: James Keaveney (DESY)\nRecent results on top quark p hysics from ATLAS\, CMS and LHCb will be presented. Results will include m easurements of inclusive and differential cross sections of top pair and s ingle top production\, searches for rare process involving top quarks\, an d measurements of assorted top quark properties including the top mass and top pair spin correlation. The latest constraints on Effective Field Theo ries of new physics using top quark data will also be discussed.\n\nhttps: //indico.tlabs.ac.za/event/75/contributions/1189/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1189/ END:VEVENT BEGIN:VEVENT SUMMARY:Search for non-resonant Higgs boson pair production DTSTART;VALUE=DATE-TIME:20181203T151000Z DTEND;VALUE=DATE-TIME:20181203T152000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1190@indico.tlabs.ac.za DESCRIPTION:Speakers: Alan Taylor (The University of Edinburgh)\nHiggs bos on pair production can be used to understand the Higgs boson self-coupling and also serve as a probe for new physics. This poster presents the searc h for non-resonant Higgs boson pair production in the bbbb\, bbtautau and bbyy final states using upto 36.1fb-1 of proton-proton collisions at sqrt( s)=13 TeV collected by the ATLAS detector. The combination of the three se arches is also presented with the final result interpreted in terms of the Higgs boson self-coupling.\n\nhttps://indico.tlabs.ac.za/event/75/contrib utions/1190/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1190/ END:VEVENT BEGIN:VEVENT SUMMARY:Search for diboson resonances in the lvll final state DTSTART;VALUE=DATE-TIME:20181203T154000Z DTEND;VALUE=DATE-TIME:20181203T155000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1191@indico.tlabs.ac.za DESCRIPTION:Speakers: ATLAS Collaboration ()\nAbstract will be provided wh en the poster is accepted. A potential presenter is Salah-eddine Dahbi\n\n https://indico.tlabs.ac.za/event/75/contributions/1191/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1191/ END:VEVENT BEGIN:VEVENT SUMMARY:Recent ALICE results on open heavy-flavour and quarkonium producti on DTSTART;VALUE=DATE-TIME:20181207T083000Z DTEND;VALUE=DATE-TIME:20181207T091500Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1177@indico.tlabs.ac.za DESCRIPTION:Speakers: Grazia Luparello ()\nRecent ALICE results on open he avy-flavour and quarkonia production \nGrazia Luparello for the ALICE Coll aboration\n(INFN Trieste)\n\nThe ALICE experiment is designed to study the hot and dense medium\, the Quark-Gluon Plasma (QGP)\, produced in ultra-r elativistic heavy-ion collisions at the LHC. \nDue to their large masses\, heavy quarks (charm and beauty) are produced in the early stages of the h eavy-ion collisions\, through hard-parton scatterings\, and their abundanc es are preserved throughout the subsequent evolution of the medium. Theref ore they represent ideal probes for characterising the QGP and for studyin g its transport properties. \nIn particular\, the measurement of the produ ction of open heavy-flavour hadrons in nucleus-nucleus collisions can give insight in the mechanisms of in-medium energy loss\, propagation and hadr onisation of heavy quarks. \nThe sequential suppression of the quarkonium states by colour screening was initially proposed as a signature of QGP fo rmation. However\, results on charmonium suppression in Pb–Pb collisi ons at the LHC seem to indicate that additional mechanisms\, such as the ( re)combination of charm and anti-charm quarks\, play a role\, leading to a more complex picture of the quarkonium melting in the QGP.\n \nThe ALICE experiment is well suited for measuring of both open heavy-flavour hadrons and quarkonia at mid and forward rapidities\, exploiting several differen t experimental techniques. \n\nThis talk will present a review of the ALIC E results on open heavy-flavour and quarkonium production with a particula r focus on the studies in Pb-Pb collisions at $\\sqrt(s_{NN}) = 5.02$ TeV. \n\nhttps://indico.tlabs.ac.za/event/75/contributions/1177/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1177/ END:VEVENT BEGIN:VEVENT SUMMARY:iThemba LABS student runner up talk DTSTART;VALUE=DATE-TIME:20181207T104500Z DTEND;VALUE=DATE-TIME:20181207T105500Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1273@indico.tlabs.ac.za DESCRIPTION:https://indico.tlabs.ac.za/event/75/contributions/1273/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1273/ END:VEVENT BEGIN:VEVENT SUMMARY:Composite models on a safe road to the Planck scale DTSTART;VALUE=DATE-TIME:20181204T154000Z DTEND;VALUE=DATE-TIME:20181204T160000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1194@indico.tlabs.ac.za DESCRIPTION:Speakers: Giacomo Cacciapaglia (IPN Lyon)\nWe will introduce a new paradigm that allows to define composite models that feature an inter acting fixed point in the UV (asymptotic safety). This is based on large N f resummation techniques. I will describe an example that features a compo site Higgs and Dark Matter at low energies\, and that allows to generate f lavour physics dynamically via partial compositeness.\n\nhttps://indico.tl abs.ac.za/event/75/contributions/1194/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1194/ END:VEVENT BEGIN:VEVENT SUMMARY:Heavy hadron production and quarkonia DTSTART;VALUE=DATE-TIME:20181206T150000Z DTEND;VALUE=DATE-TIME:20181206T152000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1193@indico.tlabs.ac.za DESCRIPTION:Speakers: Siim Tolk (CERN)\nThe LHCb detector covers a unique forward rapidity region with exceptional reach to also small transverse mo menta. In this talk we will discuss a selection of the latest results from LHCb on heavy hadron and quarkonia production.\n\nhttps://indico.tlabs.ac .za/event/75/contributions/1193/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1193/ END:VEVENT BEGIN:VEVENT SUMMARY:Tests of Lepton Flavor Universality at LHCb DTSTART;VALUE=DATE-TIME:20181203T132000Z DTEND;VALUE=DATE-TIME:20181203T134000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1192@indico.tlabs.ac.za DESCRIPTION:Speakers: Katharina Mueller (University of Zurich)\nIn the Sta ndard Model the three charged leptons are identical copies of each other\, apart from mass differences and the electroweak coupling of the gauge bos ons to leptons is independent of the lepton flavour. This prediction is ca lled lepton flavour universality (LFU) and is well tested in tree level de cays\, any violation of LFU would be a clear sign of physics beyond the St andard Model.\nExperimental tests of LFU in semileptonic decays of b-hadro ns or rare b decays are highly sensitive to New Physics particles which p referentially couple to the 2nd and 3rd generations of leptons. Recent res ults from LHCb on lepton flavour universality in semileptonic b → clν transitions and rare b->sll decays are discussed.\n\nhttps://indico.tlabs .ac.za/event/75/contributions/1192/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1192/ END:VEVENT BEGIN:VEVENT SUMMARY:Cornering top-philic dark matter: a comprehensive study from colli ders to cosmology DTSTART;VALUE=DATE-TIME:20181205T134500Z DTEND;VALUE=DATE-TIME:20181205T143000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1196@indico.tlabs.ac.za DESCRIPTION:Speakers: Benjamin Fuks (LPTHE - CNRS - UPMC)\nStudies of dark matter lie at the interface of collider physics\, astrophysics and cosmol ogy. Constraining models featuring dark matter candidates entails the capa bility to provide accurate predictions for large sets of observables and c ompare them to a wide spectrum of data. We present a framework which\, sta rting from a model Lagrangian\, allows one to consistently and systematica lly make predictions\, as well as to confront those predictions with a mul titude of experimental results. \n\nAs an application\, we consider severa l classes of simplified dark matter models where the dark sector is connec ted to the Standard Model via couplings to the top quark. We study in deta il the complementarity of relic density\, direct/indirect detection and co llider searches in constraining the model parameter space. Our study goes beyond the tree-level approximation and we show examples of how higher- or der corrections can affect the interpretation of the experimental results\ , both on for cosmological and collider observables.\n\nhttps://indico.tla bs.ac.za/event/75/contributions/1196/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1196/ END:VEVENT BEGIN:VEVENT SUMMARY:Searches in multilepton final states by CMS and ATLAS DTSTART;VALUE=DATE-TIME:20181204T132000Z DTEND;VALUE=DATE-TIME:20181204T134000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1195@indico.tlabs.ac.za DESCRIPTION:Speakers: YoungDo Ho (Kyungpook National University in Daegu\, Korea\, Republic Of)\nThe talk will present a review of the most recent r esults obtained by the ATLAS and CMS experiments at the CERN LHC on the se arches for New Physics using multi-lepton final states.\n\nhttps://indico. tlabs.ac.za/event/75/contributions/1195/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1195/ END:VEVENT BEGIN:VEVENT SUMMARY:Heavy neutrino searches at ATLAS and CMS DTSTART;VALUE=DATE-TIME:20181204T130000Z DTEND;VALUE=DATE-TIME:20181204T132000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1198@indico.tlabs.ac.za DESCRIPTION:Speakers: debarati roy (PostDoc)\nMultiple theories beyond the Standard Model predict the existence of heavy neutrinos in order to expla in the light neutrino masses\, such as the Type I seesaw mechanism\, which introduces new heavy neutrino states without additional vector bosons\, o r the Type III seesaw mechanism which introduces additional heavy lepton triplets. Left-right symmetric models\, which restore parity symmetry in w eak interactions at a higher energy scale\, also predict heavy neutrinos\, along with right-handed counterparts to the weak gauge bosons. Searches f or such heavy Majorana or Dirac neutrinos with the ATLAS and CMS detector s will be presented using proton-proton data from the LHC at a center-of-m ass energy of 13 TeV.\n\nhttps://indico.tlabs.ac.za/event/75/contribution s/1198/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1198/ END:VEVENT BEGIN:VEVENT SUMMARY:Di-Higgs searches at CMS and ATLAS DTSTART;VALUE=DATE-TIME:20181206T132000Z DTEND;VALUE=DATE-TIME:20181206T134000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1200@indico.tlabs.ac.za DESCRIPTION:Speakers: Mario Pelliccioni (Istituto Nazionale di Fisica Nucl eare)\nThe search for events where two Higgs bosons have been produced is a fundamental step in understanding the SM electroweak symmetry breaking. It can also be a powerful tool to investigate the existence of massive bos ons that decay via two Higgs particles. This topic is of particular intere st for the high luminosity LHC program. In this presentation I will show t he recent studies by ATLAS and CMS that search for the production of eithe r two resonant or non-resonant Higgs bosons\, and I will discuss the futur e perspectives of this research program.\n\nhttps://indico.tlabs.ac.za/eve nt/75/contributions/1200/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1200/ END:VEVENT BEGIN:VEVENT SUMMARY:Precision electroweak results from ATLAS and CMS DTSTART;VALUE=DATE-TIME:20181203T130000Z DTEND;VALUE=DATE-TIME:20181203T132000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1201@indico.tlabs.ac.za DESCRIPTION:Speakers: Riccardo Salvatico ()\nThe large datasets accumulate d by the ATLAS and CMS experiments at the CERN LHC allowed to derive very precide measurements of properties of the W and Z bosons and a variety of other electroweak processes. The talk will review the most recent results provided by the two collaborations.\n\nhttps://indico.tlabs.ac.za/event/75 /contributions/1201/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1201/ END:VEVENT BEGIN:VEVENT SUMMARY:Dark matter search in events with missing transverse energy and a Higgs boson decaying to two photons with the ATLAS detector DTSTART;VALUE=DATE-TIME:20181203T134000Z DTEND;VALUE=DATE-TIME:20181203T140000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1202@indico.tlabs.ac.za DESCRIPTION:Speakers: Shell-may Liao (University of the Witwatersrand)\nDa ta from pp collisions at a center-of-mass energy of 13 TeV\, corresponding to \nan integrated luminosity of 36.1 fb$^{-1}$ has been collected with t he ATLAS \ndetector in 2015 and 2016. In this search\, we look at the Stan dard Model Higgs \nboson production in the diphoton channel produced in as sociation with missing \ntransverse energy using three benchmark models. T he analysis is performed in \nseveral categories based on MET and MET sign ificance. No significant excess over \nthe expected background is observed .\n\nhttps://indico.tlabs.ac.za/event/75/contributions/1202/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1202/ END:VEVENT BEGIN:VEVENT SUMMARY:Collider constraints on Dark Matter\, Dark Energy and Cosmology DTSTART;VALUE=DATE-TIME:20181206T080000Z DTEND;VALUE=DATE-TIME:20181206T084500Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1152@indico.tlabs.ac.za DESCRIPTION:Speakers: Francesco Pandolfi (Università di Roma I e Sezione dell'INFN in Roma)\nThe talk will present the most up-to-date measurement s obtained by the ATLAS and CMS experiments at the CERN LHC related to the searches for dark matter and dark energy and the constraints provided on these quantities\n\nhttps://indico.tlabs.ac.za/event/75/contributions/1152 / LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1152/ END:VEVENT BEGIN:VEVENT SUMMARY:Probing beyond the Standard Model with Flavour Physics DTSTART;VALUE=DATE-TIME:20181207T095000Z DTEND;VALUE=DATE-TIME:20181207T103500Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1203@indico.tlabs.ac.za DESCRIPTION:Speakers: Matthias Neubert (Johannes Gutenberg University Main z)\nThe persistent flavour anomalies in semileptonic and rare leptonic dec ays of B mesons are among the most compelling hints of physics beyond the Standard Model (SM). Particular exciting in this context are the hints for violations of lepton-flavour universality. The status of these anomalies will be reviewed and their implications for physics beyond the SM will be discussed."\n\nhttps://indico.tlabs.ac.za/event/75/contributions/1203/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1203/ END:VEVENT BEGIN:VEVENT SUMMARY:LHCb Upgrade DTSTART;VALUE=DATE-TIME:20181206T154000Z DTEND;VALUE=DATE-TIME:20181206T160000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1205@indico.tlabs.ac.za DESCRIPTION:Speakers: Olaf Steinkamp (Universitaet Zuerich)\nDuring the LH C long shutdown 2\, in 2019/2020\, the LHCb collaboration is\ngoing to per form a major upgrade of the experiment. The upgraded\ndetector is designed to operate at a five times higher instantaneous\nluminosity than in Run I I and can be read out at the full bunch-crossing\nfrequency of the LHC\, a bolishing the need for a hardware trigger. This\ntalk will present a short overview of the upgrade activities and\nhighlight the physics reach of th e upgraded experiment for selected\nphysics topics. In addition\, plans fo r future upgrades will be briefly outlined.\n\nhttps://indico.tlabs.ac.za/ event/75/contributions/1205/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1205/ END:VEVENT BEGIN:VEVENT SUMMARY:Recent ALICE results on jets and photons DTSTART;VALUE=DATE-TIME:20181205T154500Z DTEND;VALUE=DATE-TIME:20181205T163000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1153@indico.tlabs.ac.za DESCRIPTION:Speakers: Thomas Peitzmann (Utrecht University/Nikhef)\nThe AL ICE experiment at the LHC is dedicated to measurements of high-energy nucl eus-nucleus collisions to study strongly interacting matter under conditio ns of extreme density and temperature\, where the creation of a quark-gluo n plasma state of matter is expected. It also performs measurements in pro ton-proton and proton-nucleus to provide reference measurement for the und erstanding of the initial state and possible modifications in cold nuclear matter\, as well as to understand the onset of collective phenomena.\nThi s talk will present recent results of the ALICE experiment on hard (high Q 2) and electromagnetic probes. More specifically\, the jet yield\, hadron- jet correlations\, and the shape and substructure of jets in pp and Pb-Pb will be discussed. Furthermore\, the measurement of the direct photon yiel d in pp and p-A collisions and the final results of direct photon elliptic flow in Pb-Pb collisions at 2.76 TeV will be presented. These observables yield information on in-medium parton-energy loss and parton shower modif ications\, and on thermal electromagnetic radiation\, and by this constrai n the dynamics of the system and its transport properties.\n\nhttps://indi co.tlabs.ac.za/event/75/contributions/1153/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1153/ END:VEVENT BEGIN:VEVENT SUMMARY:Search for a Heavy Boson in ZZ→4l with the ATLAS Experiment at t he LHC DTSTART;VALUE=DATE-TIME:20181203T152000Z DTEND;VALUE=DATE-TIME:20181203T153000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1154@indico.tlabs.ac.za DESCRIPTION:Speakers: ATLAS Collaboartion ()\nThis poster presents the sea rch for a heavy boson resonance decaying into a \npair of Z bosons leading to a 4l final state\, where l stands for either an \nelectron or a muon. The search uses proton–proton collision (Run-2) data at a \ncentre-of-ma ss energy of 13 TeV collected with the ATLAS detector during 2015 \nand 20 16 at the LHC. This study aims at answering the important question \nwheth er the SM Higgs particle is part of an extended scalar sector — as \npos tulated by various extensions to the SM\, which predict additional Higgs-\ nlike bosons\, motivating searches in an extended range of mass. The resul ts of \nthis study for an hypothetical heavy resonance are presented in th e mass range \nbetween 200 GeV and 1200 GeV. We look for an excess in the distribution of the \n4l invariant mass\, in case there is no significant excess\, the results are also \ninterpreted as limits on the production ra te of the signal hypothesis obtained \nfrom a fit to the mass distribution .\n\nhttps://indico.tlabs.ac.za/event/75/contributions/1154/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1154/ END:VEVENT BEGIN:VEVENT SUMMARY:Constraints on SM Physics from Colliders DTSTART;VALUE=DATE-TIME:20181204T095000Z DTEND;VALUE=DATE-TIME:20181204T103500Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1159@indico.tlabs.ac.za DESCRIPTION:Speakers: Kristof Schmieden (CERN)\nEffective field theories p rovide an elegant approach to study possible new physics scenarios\, by co mparing precision measurements with Standard Model predictions. The latest results on multi-boson processes at the LHC\, which are sensitive to anom alous gauge couplings and thus can be used to constrain EFT operators\, wi ll be presented. The consistency of the Standard Model can also be tested by a global electroweak fit to precision observables in the electroweak se ctor. We will present here the precision measurement of the W boson mass a s well as the new results on the determination of the electroweak mixing a ngle and the top quark mass.\n\nhttps://indico.tlabs.ac.za/event/75/contri butions/1159/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1159/ END:VEVENT BEGIN:VEVENT SUMMARY:Geometrically Driven Phase Transition in Finite Size (Casimir like ) Systems DTSTART;VALUE=DATE-TIME:20181203T134000Z DTEND;VALUE=DATE-TIME:20181203T140000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1150@indico.tlabs.ac.za DESCRIPTION:Speakers: Sylvain Mogliacci (Department of Physics\, Universit y of Cape Town)\nFollowing the recent development of a finite size thermal field theoretic formalism\, meant to probe small size corrections to the Quark-Gluon Plasma (QGP) thermal properties\, we investigate such thermal “Casimir” (geometrically confined) systems\, in the thermodynamic limi t\, when isolated. We find and present in detail the characteristic behavi or of a second order phase transition (unusually) – driven by the size o f the system – with a divergent isoenergetic compressibility\, calculate d from first principles\, at a critical length $L_c\\sim 1/T$. Finally\, w e comment on the relevance of these findings for the subsequent phenomenol ogy of QGPs\, such as those created in modern Heavy Ion Collisions (HIC)\, with respect to future calculations and interpretations of physical obser vables characterizing the presence of a QGP in HIC.\n\nhttps://indico.tlab s.ac.za/event/75/contributions/1150/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1150/ END:VEVENT BEGIN:VEVENT SUMMARY:Heavy flavour spectroscopy at LHCb (including exotic states) DTSTART;VALUE=DATE-TIME:20181203T140000Z DTEND;VALUE=DATE-TIME:20181203T142000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1151@indico.tlabs.ac.za DESCRIPTION:Speakers: Nicola Neri (INFN)\nWe report on recent heavy flavou r spectroscopy results at LHCb. These comprise: the measurement of the bra nching ratio of the rare B(s)->J/Psi p anti-p decay and the precise Bs mas s measurement\, the search for excited Sigma_b states\, the production cro ss-section of Upsilon mesons at sqrt(S)=13 TeV\, and a search for tetraqua rk states in B0-> eta_c(1S) K+pi-decays.\n\nhttps://indico.tlabs.ac.za/eve nt/75/contributions/1151/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1151/ END:VEVENT BEGIN:VEVENT SUMMARY:Highlights of the production of (Anti-)(Hyper-)Nuclei and Exotica with ALICE at the LHC DTSTART;VALUE=DATE-TIME:20181206T095000Z DTEND;VALUE=DATE-TIME:20181206T103500Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1155@indico.tlabs.ac.za DESCRIPTION:Speakers: Benjamin Doenigus (Institute for Nuclear Physics\, G oethe University Frankfurt\, Frankfurt\, Germany)\nThe high collision ener gies reached at the Large Hadron Collider (LHC) at CERN in\nproton-proton\ , proton-lead and\, in particular\, lead-lead collisions\, lead to signifi cant\nproduction rates of fragile objects\, i.e. objects whose binding ene rgies are small\ncompared to the average kinetic energy of the particles p roduced in the system.\nSuch objects are\, for instance\, light (anti-)nuc lei and (anti-)hypernuclei.\nThe most extreme example here is the hypertri ton\, a bound state of a proton\, a\nneutron and a lambda\, where the sepa ration energy of the lambda is only around 130\nkeV. These states\, from t he anti-deuteron up to the anti-alpha nuclei\, are\nnevertheless created a nd observed in heavy-ion collisions at the LHC.\n\nTheir production yields can even be well described in a statistical-thermal model\napproach with only three parameters\, namely chemical freeze-out temperature Tch\,\nvolu me V and baryo-chemical potential μB. The latter is close to zero at LHC\ , which\nmeans the ratio of anti-baryons to baryons is close to unity and in continuation also\nanti-nuclei and nuclei of the same type are produced in equal amounts. Tch at the\nLHC is extracted to be 156 MeV\, which is a factor 1000 above the binding energy of\nthe lambda to the deuteron insid e the hypertriton.\n\nIn addition\, the thermal model can be used to make predictions for the production of\nother fragile objects\, such as bound s tates of hyperons and nucleons\, or hyperonhyperon\nbound states. The data collected at LHC can be used to test the existence of\nthese bound states .\n\nhttps://indico.tlabs.ac.za/event/75/contributions/1155/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1155/ END:VEVENT BEGIN:VEVENT SUMMARY:Small system corrections to thermal field theory and pQCD energy l oss DTSTART;VALUE=DATE-TIME:20181203T132000Z DTEND;VALUE=DATE-TIME:20181203T134000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1158@indico.tlabs.ac.za DESCRIPTION:Speakers: Isobel Kolbe (University of Cape Town)\nThe ominous absence of partonic energy loss in small colliding systems is forcing the heavy-ion community to sharpen its theoretical tools. In particular\, all the main forms of pQCD energy loss depend on the assumption that the bric k of QGP is large\, but it is clear that any droplet of QGP that may be cr eated in high multiplicity $ p/d+A $ or peripheral $ AA $ collisions canno t be much larger than the mean free path\, $ \\lambda_{mfp}^{\\text{QCD}}\ \sim 1 $ fm. We present an illuminating and exhaustive numerical analysis of the recent extension of DGLV energy loss to all separation distances\, and show a need for stronger theoretical control over the nature of the m edium at early times and short separation distances. Prompted by this dem and for an understanding of the small system corrections to medium propert ies that are traditionally computed in an infinite medium\, we then presen t a thermal field theoretical calculation of the thermodynamic properties of a toy model. We consider a single\, massless\, scalar field and impose Dirichlet boundary conditions in order to investigate the qualitative eff ect of a boundary on the properties of the medium\, finding significant de viations from the standard Stefan-Boltzmann results\, even at relatively l arge $ L $.\n\nhttps://indico.tlabs.ac.za/event/75/contributions/1158/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1158/ END:VEVENT BEGIN:VEVENT SUMMARY:Summary of results on Standard Model Higgs DTSTART;VALUE=DATE-TIME:20181203T093000Z DTEND;VALUE=DATE-TIME:20181203T101500Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1157@indico.tlabs.ac.za DESCRIPTION:Speakers: Md Naimuddin (University of Delhi)\nThe talk will re view the current status of the knowledge of the properties of the Higgs bo son within the SM framework\, from measurements of the mass to various pro duction mechanisms and decay channels. The talk will include results by bo th the ATLAS and the CMS expriments at the CERN LHC.\n\nhttps://indico.tla bs.ac.za/event/75/contributions/1157/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1157/ END:VEVENT BEGIN:VEVENT SUMMARY:Search for a Higgs boson decaying through Z_dark to 4 leptons DTSTART;VALUE=DATE-TIME:20181203T153000Z DTEND;VALUE=DATE-TIME:20181203T154000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1156@indico.tlabs.ac.za DESCRIPTION:Speakers: Diallo Boye (University of Johannesburg)\nAbstract w ill be provided when poster is accepted. A potential presenter is Diallo B oye\n\nhttps://indico.tlabs.ac.za/event/75/contributions/1156/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1156/ END:VEVENT BEGIN:VEVENT SUMMARY:Results on ttH by CMS and ATLAS DTSTART;VALUE=DATE-TIME:20181206T134000Z DTEND;VALUE=DATE-TIME:20181206T140000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1163@indico.tlabs.ac.za DESCRIPTION:Speakers: Djamel BOUMEDIENE (CNRS)\nThe measurement of the pro duction of the Higgs boson in association with a pair of top-anti-top quar ks directly probes the coupling of the top quark\, the heaviest known part icle\, to the Higgs boson. Measurements are performed in different Higgs b oson decay channels\, including Higgs boson decays to a pair of photons\, to multilepton final states\, including ZZ*->4l\, and to a pair of b-quark s. The challenges range from analyzing final states with very small branch ing ratios to understanding the backgrounds for very complex final states. This talks presents the different analyses based on pp collision data col lected at 13 TeV\, as well as their combined results\, leading to the obse rvation of the ttH production process.\n\nhttps://indico.tlabs.ac.za/event /75/contributions/1163/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1163/ END:VEVENT BEGIN:VEVENT SUMMARY:Belle II Experiment status and physics prospects DTSTART;VALUE=DATE-TIME:20181206T150000Z DTEND;VALUE=DATE-TIME:20181206T152000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1161@indico.tlabs.ac.za DESCRIPTION:Speakers: Steven Robertson (McGill University)\nThe Belle II e xperiment is a substantial upgrade of the Belle detector and has recently successfully started operation at the SuperKEKB energy-asymmetric $e^+e^-$ collider\, with the first collisions in April 2018. The design luminosity is $8 \\times 10^{35}$ cm$^{-2}$s$^{-1}$ and the Belle II experiment aims to record 50 ab$^{-1}$ of data\, a factor of 50 more than the Belle exper iment. This large data set will be accumulated with low backgrounds and hi gh trigger efficiencies in a clean $e^+e^-$ environment\; it will allow to probe New Physics scales that are well beyond the reach of direct product ion at the LHC and will complement the searches through indirect effects t hat are currently ongoing or planned. \nThis data set offers also the poss ibility to search for a large variety of dark sector particles in the GeV mass range complementary to LHC and dedicated low energy experiments. Thes e searches will profit both from the size of the Belle II data\, and from specifically designed triggers for the early running of Belle II.\nThis ta lk will review the detector upgrade\, present results obtained from the fi rst collision data analysis and prospects for the next phase of data takin g that will start in early 2019\; I will then focus on the planned searche s\, and the discovery potential of the first data.\n\nhttps://indico.tlabs .ac.za/event/75/contributions/1161/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1161/ END:VEVENT BEGIN:VEVENT SUMMARY:HL-LHC prospects from ATLAS and CMS DTSTART;VALUE=DATE-TIME:20181206T152000Z DTEND;VALUE=DATE-TIME:20181206T154000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1164@indico.tlabs.ac.za DESCRIPTION:Speakers: Catrin Bernius (Catrin.Bernius@cern.ch)\nThe Large H adron Collider (LHC) has been successfully delivering proton-proton collis ion data at the unprecedented center of mass energy of 13 TeV. An upgrade is planned to increase the instantaneous luminosity delivered by LHC in wh at is called HL-LHC\, aiming to deliver a totalof about 3000/fb of data pe r experiment. To cope with the expected data-taking conditions ATLAS is pl anning major upgrades of the detector. Additionally\, ATLAS and CMS are pr eparing inputs to a CERN Yellow Report that aims to summarize the physics reach for HL-LHC and to be submitted as input to the European Strategy bef ore the end of 2018. In this contribution we focus on the physics reach ex pected for a wide range of measurements and searches at the HL-LHC for the ATLAS and CMS experiments\, including Higgs coupling\, di-Higgs boson pro duction sensitivity\, Vector Boson Scattering prospects as well as discove ry potential for electroweak SUSY and other exotic benchmark scenarios.\n\ nhttps://indico.tlabs.ac.za/event/75/contributions/1164/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1164/ END:VEVENT BEGIN:VEVENT SUMMARY:Investigation of collectivity in small collision systems with ALIC E DTSTART;VALUE=DATE-TIME:20181206T132000Z DTEND;VALUE=DATE-TIME:20181206T134000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1168@indico.tlabs.ac.za DESCRIPTION:Speakers: Katarina Gajdosova ()\nInteractions of proton-proton and proton-lead were not expected to form a deconfined hot and dense matt er\, called the Quark-Gluon Plasma (QGP). However\, these small collision systems with high multiplicities revealed signs of collectivity\, which ar e understood as a signature of the QGP emergence in heavy-ion collisions. An excellent tool to probe the presence of collectivity is the anisotropic flow measured with two- and multi-particle cumulants. \n\nIn this talk\, we will present the first measurement of flow coefficients and their magn itude correlations using Symmetric Cumulants for charged particles in pp c ollisions at $\\sqrt{s} = 13$ TeV\, p-Pb at $\\sqrt{s_{\\rm{NN}}} = 5.02$ TeV\, Xe-Xe at $\\sqrt{s_{\\rm{NN}}} = 5.44$ TeV and Pb-Pb collisions at $ \\sqrt{s_{\\rm{NN}}} = 5.02$ TeV\, collected at the LHC Run2 program. In a ddition\, the flow coefficients of identified particles in p-Pb collisions will be presented. Such broad spectrum of colliding systems with differen t energies and wide range of multiplicity allows for detailed investigatio n of their collision dynamics. Non-flow effects\, which are azimuthal corr elations not originating from a common symmetry plane\, are suppressed wit h the pseudorapidity separation and the subtraction method. Both methods a re particularly important for studies of collectivity in small systems. Th e results are compared to various theoretical models\, providing an import ant insight into initial conditions and into the nature of collective phen omena in different collision systems.\n\nhttps://indico.tlabs.ac.za/event/ 75/contributions/1168/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1168/ END:VEVENT BEGIN:VEVENT SUMMARY:Some recent developments in the area of jet substructure DTSTART;VALUE=DATE-TIME:20181204T154000Z DTEND;VALUE=DATE-TIME:20181204T160000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1173@indico.tlabs.ac.za DESCRIPTION:Speakers: Deepak Kar (University of Witwatersrand)\nWe first r eport on the detailed study of performance against robustness of two-prong substructure taggers\, performed as a part of Les Houches 2017 Standard Model Working group report (arXiv:1803.07977 [hep-ph]). Then recent result s on detector level smearing for jet substructure observables will be disc ussed\, where we point out the shortcomings of the usual Delphes based app roach\, and suggest improvements.\n\nhttps://indico.tlabs.ac.za/event/75/c ontributions/1173/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1173/ END:VEVENT BEGIN:VEVENT SUMMARY:Decoding the nature of Dark Matter DTSTART;VALUE=DATE-TIME:20181206T103500Z DTEND;VALUE=DATE-TIME:20181206T112000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1172@indico.tlabs.ac.za DESCRIPTION:Speakers: Alexander Belyaev (University of Southampton & Ruthe rford Appleton Laboratory)\nDetermination of the nature of Dark Matter (DM ) is one of the most fundamental problems of particle physics and cosmolo gy. If DM is light enough and interacts with Standard Model particles dir ectly or via some mediators with a strength beyond the gravitational one\, it can be directly produced at the Large Hadron \n\nCollider or future p article accelerators. The typical signature from DM produced in particles collisions is missing transverse energy\, MET\, due to the fact that they escape undetected from the experimental apparatus. We have found that di fferent energy dependence of the cross-sections is connected to a differen t distributions of the invariant mass of the DM pair\, and consequently to different MET distributions such that certain DM operators can be distin guished from each other and\, through this\, it is possible to characteris e the spin of DM in some cases. On the other hand DM searches in non-colli der experiments - DM direct and indirect detection ones provide independen t complimentary potential to probe the\nnature of DM and DM theory space.\ n\nhttps://indico.tlabs.ac.za/event/75/contributions/1172/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1172/ END:VEVENT BEGIN:VEVENT SUMMARY:Measurement of heavy-flavours as a function of charged-particle mu ltiplicity with ALICE at the LHC DTSTART;VALUE=DATE-TIME:20181206T154000Z DTEND;VALUE=DATE-TIME:20181206T160000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1171@indico.tlabs.ac.za DESCRIPTION:Speakers: Sibaliso Mhlanga (PhD student)\nHeavy flavours (char m and beauty) quarks are produced in the early stages of ultra-relativisti c collisions via hard scatterings and are an important tool for studying different aspects of Quantum Chromodynamics (QCD) in hadronic collisions. Charged-particle multiplicity gives information on the global characterist ics of the event and can be exploited to investigate the possible influenc e of the event hadronic activity on particle production. At LHC energies\, the measurement of heavy-flavours as a function of charged-particle multi plicity gives insight into the mechanisms which influence their production in hadronic collisions at these energies and is a tool to test the possib le role of multi-parton interactions. In ALICE\, heavy-flavour production is measured at central rapidity in the hadronic and electronic decay chann els as well as at forward rapidity in the muonic decay channel. Charged-pa rticle multiplicity is measured at central and forward rapidity. We will p resent the results on heavy-flavour production as a function of charged-p article multiplicity in pp collisions at 7 TeV\, 8 TeV and 13 TeV as well as in p-Pb collisions at 5.02 TeV and 8.16 TeV. The results will also be compared to quarkonia measurements as well as theoretical model calculatio ns.\n\nhttps://indico.tlabs.ac.za/event/75/contributions/1171/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1171/ END:VEVENT BEGIN:VEVENT SUMMARY:Fake-Rate Determination for the ttH Coupling Measurement with a Si gnature of Two Same Electric Charge Light Leptons Associated with a Tau Us ing the ATLAS Detector at the LHC DTSTART;VALUE=DATE-TIME:20181203T150000Z DTEND;VALUE=DATE-TIME:20181203T151000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1176@indico.tlabs.ac.za DESCRIPTION:Speakers: Hugo Melo ()\nAfter the discovery of a Higgs boson\, the measurements of its properties are at the forefront of research. The determination of the associated production of a Higgs boson and a pair of top quarks is of particular importance as the ttH Yukawa coupling is large and can probe for physics beyond the Standard Model. The analysis is base d on data taken by the ATLAS experiment recorded from 13 TeV proton-proto n collisions. The ttH production was analysed in various final states. The focus of this presentation is on the fake rate determination in the final state with two light leptons of same electric charge and one hadronically decaying tau lepton.\n\nhttps://indico.tlabs.ac.za/event/75/contributions /1176/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1176/ END:VEVENT BEGIN:VEVENT SUMMARY:CP violation in heavy-flavour hadrons at LHCb DTSTART;VALUE=DATE-TIME:20181206T084500Z DTEND;VALUE=DATE-TIME:20181206T093000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1179@indico.tlabs.ac.za DESCRIPTION:Speakers: Donal Hill (University of Oxford)\nWe report on rece nt $CP$ violation measurements of charm and beauty hadrons at LHCb. Measur ements of $CP$ asymmetries in $D$ mesons\, $B$ mesons and $b$-baryons will be discussed.\n\nhttps://indico.tlabs.ac.za/event/75/contributions/1179/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1179/ END:VEVENT BEGIN:VEVENT SUMMARY:Heavy ion results by ATLAS and CMS DTSTART;VALUE=DATE-TIME:20181204T132000Z DTEND;VALUE=DATE-TIME:20181204T134000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1180@indico.tlabs.ac.za DESCRIPTION:Speakers: David Krofcheck (University of Auckland\, New Zealan d)\nThe heavy-ion programmes in the ATLAS and CMS experiments at the Large Hadron Collider aim to probe and characterise properties of the quark-glu on plasma created in relativistic Pb-Pb collisions. Smaller collision syst ems involving nuclei and protons are used to distinguish between initial a nd final-state effects. The heavy-ion experiments explored the onset of co llectivity in small systems via azimuthal correlations in p-Pb collisions\ , energy loss of high momentum partons via measurements of photon-tagged j ets\, jet shapes\, heavy- flavour jets\, and reconstruction of heavy-flavo ur hadrons. Results on hot and cold nuclear effects on charmonia and botto monia via measurements in p-Pb and Pb-Pb are also studied. Measurements of W bosons and top quark production in p-Pb collisions will be presented.\n \nhttps://indico.tlabs.ac.za/event/75/contributions/1180/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1180/ END:VEVENT BEGIN:VEVENT SUMMARY:Unification of gauge and Yukawa couplings DTSTART;VALUE=DATE-TIME:20181204T150000Z DTEND;VALUE=DATE-TIME:20181204T152000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1184@indico.tlabs.ac.za DESCRIPTION:Speakers: Aldo Deandrea (IPNL - University Lyon 1)\nThe unific ation of gauge and top Yukawa couplings is an attractive feature of gauge- Higgs unification models in extra-dimensions. This feature is usually cons idered difficult to obtain based on simple group theory analyses. We consi der a minimal toy model including the renormalisation group running at one loop. The gauge couplings unify asymptotically at high energies\, and we discuss presence of an UV fixed point. The problem of the Higgs mass gener ation by the Coleman-Weinberg effective potential is also discussed.\n\nht tps://indico.tlabs.ac.za/event/75/contributions/1184/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1184/ END:VEVENT BEGIN:VEVENT SUMMARY:Dark matter\, collider searches and the early Universe DTSTART;VALUE=DATE-TIME:20181205T130000Z DTEND;VALUE=DATE-TIME:20181205T134500Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1182@indico.tlabs.ac.za DESCRIPTION:Speakers: Nazila Mahmoudi (Lyon University)\nhttps://indico.tl abs.ac.za/event/75/contributions/1182/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1182/ END:VEVENT BEGIN:VEVENT SUMMARY:Results on Heavy Ion Physics at LHCb DTSTART;VALUE=DATE-TIME:20181203T103500Z DTEND;VALUE=DATE-TIME:20181203T112000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1265@indico.tlabs.ac.za DESCRIPTION:Speakers: Giacomo Graziani (INFN\, Sezione di Firenze)\nhttps: //indico.tlabs.ac.za/event/75/contributions/1265/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1265/ END:VEVENT BEGIN:VEVENT SUMMARY:Welcome and introduction DTSTART;VALUE=DATE-TIME:20181203T070000Z DTEND;VALUE=DATE-TIME:20181203T071500Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1263@indico.tlabs.ac.za DESCRIPTION:Speakers: Alan Cornell (National Institute for Theoretical Phy sics)\nhttps://indico.tlabs.ac.za/event/75/contributions/1263/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1263/ END:VEVENT BEGIN:VEVENT SUMMARY:Large Scale Facilities in Nuclear Physics DTSTART;VALUE=DATE-TIME:20181203T080000Z DTEND;VALUE=DATE-TIME:20181203T084500Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1262@indico.tlabs.ac.za DESCRIPTION:Speakers: Faiҫal Azaiez (iThemba LABS)\nhttps://indico.tlabs. ac.za/event/75/contributions/1262/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1262/ END:VEVENT BEGIN:VEVENT SUMMARY:Overview Talk DTSTART;VALUE=DATE-TIME:20181203T071500Z DTEND;VALUE=DATE-TIME:20181203T080000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1264@indico.tlabs.ac.za DESCRIPTION:Speakers: Jean Cleymans (University of Cape Town)\nhttps://ind ico.tlabs.ac.za/event/75/contributions/1264/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1264/ END:VEVENT BEGIN:VEVENT SUMMARY:A Characterisation and Reconstruction of Radial Strip Sensors in P reparation for a Higher Radiation Environment in the ATLAS Detector at CER N DTSTART;VALUE=DATE-TIME:20181203T155000Z DTEND;VALUE=DATE-TIME:20181203T160000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1174@indico.tlabs.ac.za DESCRIPTION:Speakers: Ryan Justin Atkin (University of Cape Town (ZA))\nTh e upgrade of the Large Hadron Collider (LHC) to the high luminosity LHC (H L-LHC) will result in far more collisions occurring per particle bunch cro ssing\, in turn producing more particles per second. Consequently\, the cu rrent detectors will need to be upgraded to accommodate for the large incr ease in radiation and data acquisition as well as a need to improve the tr acking efficiency for the increased occupancy environment. One of the main upgrades to the ATLAS detector is the complete overhaul of the inner dete ctor (ID) by replacing it with an all silicon Inner Tracker (ITk). A simul ation of the ITk will also be required for performance simulations as well as for testing sample sensors in testbeams. The current testbeam simulati on and reconstruction software are written completely using Cartesian defi nitions. However\, some of the geometries in the ITk have radial definitio ns. In particular\, the geometry of the R0 sensor in the strip end-cap is in need of a radial description. Presented is the work behind characterisi ng a radial geometry for the R0 sensor in these testbeam software. The sim ulated data was reconstructed and analysed with post-reconstruction softwa re and then compared to the reconstructed and analysed data from the EUDET testbeam telescope at DESY\, Hamburg.\n\nhttps://indico.tlabs.ac.za/event /75/contributions/1174/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1174/ END:VEVENT BEGIN:VEVENT SUMMARY:The Physics of a Trillion degrees DTSTART;VALUE=DATE-TIME:20181204T080000Z DTEND;VALUE=DATE-TIME:20181204T084500Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1266@indico.tlabs.ac.za DESCRIPTION:Speakers: Will Horowitz (University of Cape Town)\nA microseco nd after the Big Bang\, all of space existed at a trillion degrees\, one h undred thousand times hotter than the center of the sun. 13.8 billion yea rs later\, massive collaborations of thousands of scientists recreate thes e conditions of the early universe thousands of times a second in one of t he most expensive and complicated science experiments ever attempted. In this talk I provide a general introduction to the physics explored in thes e Little Bangs\, ephemeral fireballs that--during their lifetimes of less than a billionth of a trillionth of a second--are droplets of the hottest\ , most perfect fluid in the universe.\n\nhttps://indico.tlabs.ac.za/event/ 75/contributions/1266/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1266/ END:VEVENT BEGIN:VEVENT SUMMARY:Constraining new physics with model-dependent collider measurement s DTSTART;VALUE=DATE-TIME:20181204T103500Z DTEND;VALUE=DATE-TIME:20181204T112000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1267@indico.tlabs.ac.za DESCRIPTION:Speakers: Jon Butterworth (UCL)\nhttps://indico.tlabs.ac.za/ev ent/75/contributions/1267/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1267/ END:VEVENT BEGIN:VEVENT SUMMARY:Search for chargino-neutralino pairs at LHC using MT2-MAOS reconst ruction DTSTART;VALUE=DATE-TIME:20181204T150000Z DTEND;VALUE=DATE-TIME:20181204T152000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1204@indico.tlabs.ac.za DESCRIPTION:Speakers: Steve Muanza (CPPM Marseille\, CNRS-IN2P3 &\; Aix -Marseille University)\nSeveral studies based upon the MT2-MAOS method [1] have shown the possibility of reconstructing the momenta of invisible par ticles in events produced at hadron colliders. This has opened an avenue t o extract more informations about signals which are studied or searched fo r in events topologies having some missing transverse momentum (mET).\n We present preliminary results of a realistic application of such a method i n a simulated search for chargino-neutralino pairs decaying to W(->lnu)+h( ->bb)+mET at the LHC Run 2.\n In particular\, we include the impact of the sub-detector finite resolutions\, of the pile-up\, and of the background surviving the event selection\, on the reconstruction of the signal kinema tics. We compare these preliminary results with those from the standard an alysis techniques currently employed by the ATLAS and CMS for this search channel.\n\n[1] arXiv:0810.4853v3\, arXiv:0908.0079\, arXiv:0909.4853 [hep -ph]\n\nhttps://indico.tlabs.ac.za/event/75/contributions/1204/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1204/ END:VEVENT BEGIN:VEVENT SUMMARY:Stealth SUSY search with a large-radius jet containing a photon DTSTART;VALUE=DATE-TIME:20181204T152000Z DTEND;VALUE=DATE-TIME:20181204T154000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1167@indico.tlabs.ac.za DESCRIPTION:Speakers: Marvin Flores (University of the Witwatersrand)\nThe LHC has collected data for more than eight years\, but no clear signal fo r new physics has emerged so far. This is surprising because there is over whelming evidence that the Standard Model must be extended. One such exten sion is SUSY. Here\, new scalar and fermions at the TeV scale are predicte d but the null results at the LHC have ruled out large region of its param eter space. However\, many searches assume that large missing transverse e nergy is present in the signal. In the so-called stealth SUSY scenarios\, new light almost degenerate fermion/boson pairs with weak scale supersymme tric masses are introduced which result in significantly reduced missing t ransverse energy. In this talk we want to investigate the discovery potent ial of such stealth SUSY models at the LHC. We reconstruct the decay produ cts by using a large-radius jet containing a high transverse momentum phot on\, which has not been used in experiments so far. Requirements on the ev ent topology\, and use of substructure variables result in orders of less background than signal.\n\nhttps://indico.tlabs.ac.za/event/75/contributio ns/1167/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1167/ END:VEVENT BEGIN:VEVENT SUMMARY:Heavy-Ion results from the HADES experiment DTSTART;VALUE=DATE-TIME:20181204T130000Z DTEND;VALUE=DATE-TIME:20181204T132000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1149@indico.tlabs.ac.za DESCRIPTION:Speakers: Celso Franco (LIP-Lisbon)\nThe HADES experiment at G SI was designed to investigate the properties of hadrons inside dense nuc lear matter. The latter is created by heavy-ion collisions at energies of 1–-2 AGeV. Currently\, HADES is the only running experiment that studie s the region in the QCD phase diagram of very high net-baryon densities an d moderate temperatures. The created state of matter\, in fact\, resemble s matter created during merger of neutron stars with particular configurat ion. While the gravitational waves emitted by such events are expected to tightly constrain the equation of state of nuclear matter\, HADES has the   potential of providing a deeper understanding about the microscopic pro perties of such matter due to an improved modeling of heavy heavy-ion coll isions. One of the goals is to improve the knowledge about the generation of hadronic masses. At three times normal nuclear matter density the quar k antiquark condensates\, which are an order parameter of chiral symmetry restoration\, are partially depleted and\, therefore\, HADES is able to p rovide crucial information by investigating the in-medium properties of ha drons. One of the best probes that one can use to investigate a strongly i nteracting baryon-rich medium are the dileptons emerging from virtual phot on decays. Since electromagnetic probes decouple from the dense interacti on region once they are produced\, their phase space distributions carry information about the temperature and structure of the dense QCD medium. Hadrons carrying strangeness are valuable messengers as well\, because at 1-–2  AGeV their production threshold is above the energy available in a single N+N collision. This means that additional energy is provided by t he medium and\, therefore\, strange hadrons are also good probes of the in -medium properties. Both the dilepton and strangeness results from the HA DES Au+Au data at 1.23 AGeV will be presented.\n\nhttps://indico.tlabs.ac. za/event/75/contributions/1149/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1149/ END:VEVENT BEGIN:VEVENT SUMMARY:Strongly Coupled $\\Upsilon$(1S) Suppression in $\\sqrt{s}_{NN}=2. 76$ TeV Pb+Pb Collisions DTSTART;VALUE=DATE-TIME:20181204T134000Z DTEND;VALUE=DATE-TIME:20181204T140000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1185@indico.tlabs.ac.za DESCRIPTION:Speakers: Nadia Barnard (University of Cape Town)\nIn a revolu tionary paper\, Matsui and Satz proposed using the suppression of quarkoni a as a smoking gun signature of deconfinement in relativistic heavy ion co llisions. The stunning success of using strong-coupling\, AdS/CFT techniqu es to predict the viscosity to entropy density ratio extracted from RHIC a nd LHC heavy ion collision data using sophisticated 3+1D relativistic visc ous hydrodynamics has prompted further investigation into the physics of a strongly-coupled plasma. We compute\, for the first time\, the suppressio n of bottomonia in a strongly coupled QGP\, and compare the results to tho se from a weakly coupled QGP and to data. The complex binding energies whi ch inform the thermal width and hence the $R_{AA}$ of $\\Upsilon$(1S) are determined using imaginary time techniques. Further\, we discuss the valid ity of this methodology which solves for strongly coupled binding energies using static $q\\bar{q}$ potential models from AdS/CFT by comparing to in dependent results.\n\nhttps://indico.tlabs.ac.za/event/75/contributions/11 85/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1185/ END:VEVENT BEGIN:VEVENT SUMMARY:Up- and Down- Quark Masses from QCD Finite Energy Sum Rules DTSTART;VALUE=DATE-TIME:20181204T152000Z DTEND;VALUE=DATE-TIME:20181204T154000Z DTSTAMP;VALUE=DATE-TIME:20260717T044822Z UID:indico-contribution-75-1169@indico.tlabs.ac.za DESCRIPTION:Speakers: Alexes Mes (University of Cape Town)\nDue to quark-g luon confinement in QCD\, the quark masses entering the QCD Lagrangian can not be measured directly like\, for example\, the electron or the proton m ass. They must be determined either numerically from Lattice QCD\, or anal ytically using QCD sum rules. The latter makes use of the complex squared energy plane\, and Cauchy’s theorem for the current-current correlator o f the axial-vector divergences. This procedure relates a QCD expression co ntaining the quark masses\, with a hadronic expression in terms of known h adron masses\, couplings\, and lifetimes/widths. Thus\, the quark masses b ecome a function of known hadronic information. \nWe determine the up- and down- quark masses from a QCD Finite Energy Sum Rule\, using the pseudosc alar correlator to six-loop order in perturbative QCD\, with the leading v acuum condensates and higher order quark mass corrections included. We red uce the systematic uncertainties stemming from the hadronic resonance sect or by introducing an integration kernel in the Cauchy integral in the comp lex squared energy plane. Further\, we examine the issue of convergence of the perturbative QCD expression of the pseudoscalar-current correlator. B oth the Fixed Order Perturbation Theory (FOPT) method and Contour Improved Perturbation Theory (CIPT) method are explored. Our results from the latt er exhibit very good convergence and stability in the wide window s$_0$ = 1.5 − 4.0 GeV$^2$\, where s$_0$ is the radius of the integration contour in the complex squared energy s-plane. The results are: (m$_u$ +m$_d$)/2 = 4.36 ± 0.36 MeV (at a scale Q = 2 GeV)\, m$_u$(Q = 2 GeV) = 2.83 ± 0.2 3 MeV\, and m$_d$(Q = 2 GeV) = 5.90 ± 0.48 MeV.\n\nhttps://indico.tlabs. ac.za/event/75/contributions/1169/ LOCATION:Casa do Sol URL:https://indico.tlabs.ac.za/event/75/contributions/1169/ END:VEVENT END:VCALENDAR