Name: Light ion collisions at the LHC - 2025
Start: 2025-12-01T09:00:00+01:00
End: 2025-12-03T18:00:00+01:00
Location: CERN

Light ion collisions at the LHC - 2025

from Monday, December 1, 2025 (9:00 AM) to Wednesday, December 3, 2025 (6:00 PM)

Monday, December 1, 2025

9:00 AM Welcome
Welcome
9:00 AM - 9:10 AM
Room: 6/2-024 - BE Auditorium Meyrin
9:10 AM Machine and experimental soft-probes reports
9:10 AM - 10:40 AM
Room: 6/2-024 - BE Auditorium Meyrin
Contributions

9:10 AM Overview of performance of the 2025 oxygen and neon run - Theodoros Argyropoulos (CERN)

9:25 AM ALICE overview soft - Emil Gorm Nielsen (University of Copenhagen (DK))

9:40 AM ATLAS overview soft - Blair Daniel Seidlitz (Columbia University (US))

9:55 AM CMS overview soft - Aryaa Dattamunsi (Indian Institute of Technology Madras (IN))

10:10 AM LHCb overview soft - Zhengchen Lian (Tsinghua University (CN))

10:25 AM STAR overview soft - Chunjian Zhang (Fudan University (CN))
10:40 AM Coffee break
Coffee break
10:40 AM - 11:00 AM
Room: 6/2-024 - BE Auditorium Meyrin
11:00 AM Soft Physics in Light-Ion Collisions
11:00 AM - 12:15 PM
Room: 6/2-024 - BE Auditorium Meyrin
Contributions

11:00 AM Predictions for light-ions - Wenbin Zhao (Peking University)

11:15 AM Predictions for light-ions - Wilke Van Der Schee (CERN)

11:30 AM Longitudinal structure of light-ion collisions - Andreas Kirchner

11:45 AM Light-ions with McDipper initial conditions - Oscar Garcia-Montero (Universität Bielefeld)

12:00 PM Flow in light ion collisions from kinetic theory and inferences on hydrodynamisation - Clemens Werthmann (Ghent University)
12:15 PM Lunch break
Lunch break
12:15 PM - 2:00 PM
Room: 6/2-024 - BE Auditorium Meyrin
2:00 PM Soft Physics in Light-Ion Collisions
2:00 PM - 3:30 PM
Room: 6/2-024 - BE Auditorium Meyrin
Contributions

2:00 PM Collective Dynamics and Opacity Estimation in OO Collision Systems via CoMBolt-ITA - Seyed Farid Taghavi (Technische Universitaet Muenchen (DE))

2:15 PM Causality Constraints to Multi-Particle Cumulants: Testing Different System Sizes at the LHC - Isabella Danhoni

2:30 PM Collective flow in transport models - Lucas Constantin

2:45 PM Discussion: Do we understand collectivity in small systems? - Oscar Garcia-Montero (Universität Bielefeld) Raimond Snellings (Nikhef National institute for subatomic physics (NL)) Sunil Jaiswal
3:30 PM Coffee break
Coffee break
3:30 PM - 4:00 PM
Room: 6/2-024 - BE Auditorium Meyrin
4:00 PM Nuclear structure
4:00 PM - 5:40 PM
Room: 6/2-024 - BE Auditorium Meyrin
Contributions

4:00 PM Toward lattice simulations of strongly-correlated nuclear systems with high-fidelity chiral interactions - Dean Lee

4:20 PM Visualizing nuclear correlations: ab initio shapes of nuclei and application to 22Ne - Benjamin Bally (TU Darmstadt)

4:45 PM The shape of 20Ne from low energy nuclear physics measurements - Nico Orce

5:05 PM Discussion: Imaging nuclei in high-energy collisions
6:00 PM Reception
Reception
6:00 PM - 8:00 PM
Room: 6/2-024 - BE Auditorium Meyrin
Tuesday, December 2, 2025
9:00 AM Hard Probes and nPDFs in Light-Ion Collisions I
9:00 AM - 10:05 AM
Room: 6/2-024 - BE Auditorium Meyrin
Contributions

9:00 AM Status and perspectives of nPDFs for light-ions - Petja Kalle Matias Paakkinen

9:20 AM Nuclear PDFs from the nCTEQ25 global analysis and potential impact of light ion collisions at the LHC - Katrin Greve

9:35 AM No-quenching baseline computations for light-ion collisions - Jannis Gebhard (Heidelberg University)

9:50 AM ALICE overview hard probes - Florian Jonas (CERN)
10:05 AM Coffee break
Coffee break
10:05 AM - 10:35 AM
Room: 6/2-024 - BE Auditorium Meyrin
10:35 AM Hard Probes and nPDFs in Light-Ion Collisions II: Hard Probes and nPDFs in Light-Ion Collisions II
Hard Probes and nPDFs in Light-Ion Collisions II
10:35 AM - 11:20 AM
Room: 6/2-024 - BE Auditorium Meyrin
Contributions

10:35 AM ATLAS overview hard probes - Anne Marie Sickles (Univ. Illinois at Urbana Champaign (US))

10:50 AM CMS overview hard probes - Cristian Baldenegro (Massachusetts Inst. of Technology (US))

11:05 AM STAR / sPHENIX overview hard probes - Sijie Zhang
11:20 AM Topical discussions
11:20 AM - 11:50 AM
Room: 6/2-024 - BE Auditorium Meyrin
Contributions

11:20 AM Discussion: Centrality determination in light ions
11:50 AM Lunch break
Lunch break
11:50 AM - 1:30 PM
Room: 6/2-024 - BE Auditorium Meyrin
1:30 PM Energy loss in light ion collisions
1:30 PM - 3:00 PM
Room: 6/2-024 - BE Auditorium Meyrin
Contributions

1:30 PM Light-Ion Suppression from pQCD Energy Loss with Small-System Corrections - Cole Faraday

1:45 PM Energy loss predictions in the color-coherence framework - Adam Takacs (Heidelberg University)

2:00 PM Leveraging light-ion collisions to eke out the path-length dependence of energy-loss - Isobel Kolbé (University of the Witwatersrand (ZA))

2:15 PM Jet quenching and medium response for OO collisions in the hybrid model - Arjun Srinivasan Kudinoor (Massachusetts Institute of Technology)

2:30 PM Early Colour-Coherence Effects in Jet Quenching - Liliana Apolinario (LIP (PT))

2:45 PM Path length dependence of radiative energy loss - Francois Arleo (Subatech, Nantes)
3:00 PM Coffee break
Coffee break
3:00 PM - 3:30 PM
Room: 6/2-024 - BE Auditorium Meyrin
3:30 PM Energy loss in light ion collisions
3:30 PM - 4:45 PM
Room: 6/2-024 - BE Auditorium Meyrin
Contributions

3:30 PM Discussion: What have we learnt about hard probes by varying the system size? - Carlota Andres (CPHT, Ecole polytechnique) Dennis Perepelitsa (University of Colorado Boulder) William Horowitz (University of Cape Town) Yen-Jie Lee (Massachusetts Inst. of Technology (US))
4:45 PM SMOG2 & cosmic rays
4:45 PM - 5:45 PM
Room: 6/2-024 - BE Auditorium Meyrin
Contributions

4:45 PM Perspectives and opportunities for SMOG2 - Chiara Lucarelli (CERN)

5:00 PM Report from LHCf and cosmic showers - Eugenio Berti (Universita e INFN, Firenze (IT))

5:15 PM Expected impacts of light-ion collisions on models of cosmic showers - Felix Riehn (Technische Universitaet Dortmund (DE))
7:00 PM Workshop dinner
Workshop dinner
7:00 PM - 9:00 PM
Wednesday, December 3, 2025
9:00 AM Machine Performance and Science Cases for Future Ion Runs
9:00 AM - 10:10 AM
Room: 6/2-024 - BE Auditorium Meyrin
Contributions

9:00 AM Overview of the planned R&D of future ions post-LS3 in the injector chain - Maciej Slupecki (CERN)

9:20 AM Charting the Luminosity Capabilities of the CERN Large Hadron Collider with Various Nuclear Species - Roderik Bruce (CERN)

9:40 AM Beam transmutation in light-ion collisions - John Jowett (GSI - Helmholtzzentrum fur Schwerionenforschung GmbH (DE))

9:55 AM The case of Nuclear Matrix Elements of 0νββ decay - Giuliano Giacalone
10:10 AM Coffee break
Coffee break
10:10 AM - 10:40 AM
Room: 6/2-024 - BE Auditorium Meyrin
10:40 AM Discussion on the 2026 Ion Run and Beyond
10:40 AM - 12:00 PM
Room: 6/2-024 - BE Auditorium Meyrin
Contributions

10:40 AM LHC performance in 2025 & what comes next - Chiara Zampolli (CERN) Christopher Young (CERN)

10:50 AM Light ions with ALICE 3 - David Dobrigkeit Chinellato (Austrian Academy of Sciences (AT))

11:10 AM Looking for the path towards saturation at the LHC - Christophe Royon (The University of Kansas (US))

11:25 AM Discussion
12:00 PM Lunch break
Lunch break
12:00 PM - 2:00 PM
Room: 6/2-024 - BE Auditorium Meyrin
2:00 PM TH Colloqium: Light-Ion Collisions - Bridging Small and Large QCD Systems - Aleksas Mazeliauskas
TH Colloqium: Light-Ion Collisions - Bridging Small and Large QCD Systems
- Aleksas Mazeliauskas
2:00 PM - 3:00 PM
Room: 4/3-006 - TH Conference Room The first oxygen–oxygen and neon–neon collisions at the LHC this July have opened a new frontier in exploring hot and dense QCD matter. These light-ion systems bridge the gap between proton–proton and heavy-ion collisions. Over the past decade, experiments have revealed intriguing but sometimes puzzling results: signals of elliptic flow appear even in proton–proton collisions, whereas clear signs of jet quenching remain absent in small systems. The recent pO, OO, and NeNe runs enable precision tests of heavy-ion models in intermediate-size systems. Light-ion collisions probe the critical regime where nuclear structure, perturbative QCD, and quark–gluon plasma physics intersect. I will discuss what the first light-ion data reveal about the structure of the colliding nuclei, the applicability of hydrodynamics, and the onset of partonic energy loss in small systems.

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