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Jets and Heavy Flavour as QGP Probes: Experimental overview
Jets and heavy-flavour particles are powerful probes of the quark-gluon plasma (QGP) created in heavy-ion collisions at the LHC.Their production rates, angular anisotropies, and internal structure provide insights into parton energy loss, medium-induced modifications of parton showers, heavy-quark transport, and hadronization in...
The Inner Detector of the ATLAS experiment will be completely replaced by the Inner Tracker (ITk) in preparation for the High-Luminosity upgrade of the Large Hadron Collider (LHC) at CERN in Geneva, Switzerland. The ITk will target an operational dew point of −60 °C, requiring precise environmental monitoring to ensure reliable detector performance. With normal operation at −20 °C, and fault...
ATLAS, together with the Physics Without Frontier Program, would like to organize a full afternoon program of an open-data session to train students or delegates on accessing ATLAS open data and how to use it. This is an Outreach activity of the conference besides the Outreach that will be done at different historically disadvantaged universities before the conference. The trainees once...
The High-Luminosity Large Hadron Collider (HL-LHC) promises an unprecedented wealth of data and exciting opportunities for precision measurements and searches for new physics. However, exploiting this physics potential will require overcoming formidable challenges in computing and software. With increasing collision rates, more complex events, and ever-growing demands on simulation and data...
Dark matter is one of the greatest mysteries that cannot be explained by the Standard Model. Many new physics models beyond the Standard Model have been proposed to explain dark matter, and various experimental approaches, including direct, indirect, and collider searches, are being pursued. This talk provides an overview of recent dark matter searches, focusing in particular on the...
The South African scientific collaboration with CERN (SA-CERN), celebrating more than 15 years of partnership, has built a broad footprint of world-class research and financial support for students to participate in the LHC endeavours, as well as outreach via the International Masterclasses. Other public engagement activities in South Africa are highlighted, such as Phenomenal Physics at the...
Lattice QCD predicts that at sufficiently large energy density a transition to a medium with deconfined quarks and gluons occurs - a Quark-Gluon Plasma is created. The talk gives an introduction to the study of high-density Quantum Chromodynamics using ultrarelativistic heavy-ion and proton beams. The main observables and results are introduced which allow to detect and characterize this...
For over a decade, the question of whether or not small systems such as $p$Pb form a Quark-Gluon Plasma (QGP) has been hotly debated. A central piece of evidence is the presence of anisotropic flow, which can be interpreted as a hydrodynamic response to initial geometry. The problem with this argument is that the initial geometry of $p$Pb is poorly understood. Over the past year, data from...
he dedicated 2025 LHC light-ion run delivered p+O, O+O and Ne+Ne datasets, opening a new opportunity to study QCD in collision systems intermediate between proton–nucleus and large heavy-ion collisions. These new data broaden the range of systems available for investigating nuclear structure, initial-state effects and the emergence of final-state medium phenomena.
This talk will review...
The Tile Calorimeter, a central hadronic calorimeter of the ATLAS experiment at the Large Hadron Collider, is undergoing a major upgrade to meet the requirements of the High-Luminosity LHC (HL-LHC). The Phase-II upgrade aims to address the challenges posed by increased trigger rates of up to 1 MHz, higher radiation levels, and enhanced pile-up conditions through a complete redesign of the...
After the discovery of the Higgs boson at the LHC particle physics has entered a new era. With the successful data taking over the past decade, many properties of this particle have been established. Despite this, important questions remain open and call for experimental exploration. The Higgs field itself is linked to deep structural questions of the Standard Model of particle physics such as...
The ALICE experiment investigates the properties of the quark--gluon plasma (QGP) created in ultrarelativistic heavy-ion collisions. Two of the most prominent signatures of QGP formation are the collective hydrodynamic expansion of the produced medium and the energy loss of high-energy partons traversing the medium, known as jet quenching. Measurements performed in high-multiplicity p--Pb and...
This talk will discuss the recent progress in describing perturbative QCD in event generators.
CERN has a new 2026–2030 strategy the next five years framed around: (1) global leadership in accelerator science and technology, (2) cutting-edge scientific research, (3) delivering value for stakeholders, (4) wider societal impact, and (5) organisational excellence. This has value for external User Groups like South Africa beyond participation in frontier level research. There is an...
Despite the successful structural completion of the Standard Model (SM)
of particle physics through the discovery of the Higgs boson, questions
remain open that cannot be answered within the SM. Among these, two of
the most prominent ones are those for the nature of Dark Matter (DM) and
why there is more matter than antimatter in the universe. The answers to
these (and also other)...
We will present the latest measurements in multiboson and top-quark physics performed by the ATLAS, CMS, and LHCb experiments at the LHC. These measurements cover a broad range of production processes and provide complementary probes of the Standard Model, testing its predictions across different energy scales and interaction regimes. We will review recent experimental results, highlighting...
