BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN 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:20260606T142352Z UID:indico-contribution-253-1194@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:Unification of gauge and Yukawa couplings DTSTART;VALUE=DATE-TIME:20181204T150000Z DTEND;VALUE=DATE-TIME:20181204T152000Z DTSTAMP;VALUE=DATE-TIME:20260606T142352Z UID:indico-contribution-253-1184@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: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:20260606T142352Z UID:indico-contribution-253-1169@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