Conveners
Collectivity in high energy collisions: jets, flows, and other mechanisms: (4)
- Austin Alan Baty (University of Illinois Chicago)
- Yuuka Kanakubo (RIKEN iTHEMS / Lawrence Berkeley National Laboratory / UC Berkeley)
Collectivity in high energy collisions: jets, flows, and other mechanisms: (4)
- Yuuka Kanakubo (RIKEN iTHEMS / Lawrence Berkeley National Laboratory / UC Berkeley)
- Austin Alan Baty (University of Illinois Chicago)
Collectivity in high energy collisions: jets, flows, and other mechanisms: (4)
- Yuuka Kanakubo (RIKEN iTHEMS / Lawrence Berkeley National Laboratory / UC Berkeley)
- Austin Alan Baty (University of Illinois Chicago)
Collectivity in high energy collisions: jets, flows, and other mechanisms: (1)
- Austin Alan Baty (University of Illinois Chicago)
- Yuuka Kanakubo (RIKEN iTHEMS / Lawrence Berkeley National Laboratory / UC Berkeley)
Collectivity in high energy collisions: jets, flows, and other mechanisms: (2)
- There are no conveners in this block
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Xiaoyu Liu (Rice University (US))22/09/2025, 15:20Collectivity in high energy collisions: jets, flows, and other mechanismsTalk
Recent CMS data revealed intriguing long-range correlations within high-multiplicity jets produced in proton-proton collisions, suggesting the potential onset of collective behavior, typically associated with heavy-ion collisions, at much smaller scales. Two-particle correlations in the “jet frame†show a surprising rise in elliptic flow harmonics, $v_{2}^*$, at large pseudorapidity...
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Dr Iurii Karpenko (FNSPE CTU in Prague)22/09/2025, 15:45Collectivity in high energy collisions: jets, flows, and other mechanismsTalk
In this talk, I discuss challenges in modelling collective expansion of baryon-rich medium in heavy-ion collisions at RHIC Beam Energy Scan or FAIR energies. Then I focus on specific approaches of multi-fluid dynamics and single-fluid dynamics with dynamical fluidization. I show generic conclusions from fluid-dynamic modelling at such energies, then present results from the two approaches and...
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Hadi Mehrabpour (Peking Univresity)22/09/2025, 16:10Collectivity in high energy collisions: jets, flows, and other mechanismsTalk
The study of nuclear structure has long been a fundamental aspect of nuclear physics, offering critical insights into the forces and interactions that govern matter at the subatomic level. Investigating nuclear structure in relation to complex nucleon-nucleon interactions poses significant challenges in low-energy nuclear physics, prompting extensive research into various phenomenological...
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Sandra Padula (UNESP - Universidade Estadual Paulista (BR))22/09/2025, 16:35Collectivity in high energy collisions: jets, flows, and other mechanismsTalk
A hot and dense quark–gluon medium is observed to be created in ultrarelativistic nuclear collisions, exhibiting striking collective flow behavior, with fluid-like properties well described by relativistic hydrodynamics, with minimal viscous dissipation. The characteristics of this medium are under intense investigation, and in particular, its thermodynamical properties. In this context, the...
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Izabela Juszczak (Polish Academy of Sciences (PL))22/09/2025, 17:30Collectivity in high energy collisions: jets, flows, and other mechanismsTalk
The new results on three-pion Bose-Einstein correlations measured with the sample of proton-proton collisions recorded at the centre-of-mass energy of √s = 7 TeV will be presented, being the first study of three-particle Bose-Einstein correlations measured in the forward region provided by the LHCb detector. The results are interpreted within the core-halo model for the first time in...
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Malgorzata Anna Janik (Warsaw University of Technology (PL))22/09/2025, 17:55Collectivity in high energy collisions: jets, flows, and other mechanismsTalk
One of the most effective techniques for investigating the mechanism of baryon production is the study of angular correlations between two particles. Angular correlations represent a convolution of various physical processes, such as mini-jets, Bose-Einstein quantum statistics, conservation of momentum, resonances, and other phenomena that contribute to the unique behavior observed for...
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Thomas Trainor22/09/2025, 18:20Collectivity in high energy collisions: jets, flows, and other mechanismsTalk
Measure v2(pt) is interpreted to estimate the amplitude of an azimuth component of particle pt spectra arising from transverse (elliptic) flow of a dense QCD medium. Comparisons of v2 data with hydrodynamic (hydro) theory seem to indicate very low medium viscosity leading to attribution of a "perfect liquid." As defined v2(pt) is a ratio, with a single-particle spectrum appearing in its...
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Zhiyong Lu (China Institute of Atomic Energy (CN))22/09/2025, 18:45Collectivity in high energy collisions: jets, flows, and other mechanismsTalk
By smashing heavy nuclei at RHIC and the LHC and analysing the anisotropic expansion (flow) of the final state produced particles, unique information on the structure of the collided nuclei can be obtained. Existing efforts primarily focus on the colliding mode of heavy nuclei collisions. In contrast, nuclear structure studies with collisions of light nuclei and the fixed target mode have not...
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Samuel Belin (Universidade de Santiago de Compostela (ES))23/09/2025, 09:00Collectivity in high energy collisions: jets, flows, and other mechanismsTalk
Particle correlations are powerful tools for studying quantum chromodynamics in hadron collisions. In heavy-ion collisions, azimuthal angular correlations probe collective phenomena in hot, dense, nuclear media, such as QGP. In small collision systems, they could point to final-state effects or potential initial-state correlations. The LHCb experiment has the unique ability to study particle...
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Yuko Sekiguchi (RIKEN)23/09/2025, 09:25Collectivity in high energy collisions: jets, flows, and other mechanismsTalk
sPHENIX is a next-generation collider detector at RHIC, featuring large-acceptance calorimeters and precision tracking systems. The detector was successfully commissioned and collected physics data in both p+p and Au+Au collisions in 2024. Full-scale Au+Au data taking is currently in progress in 2025.
sPHENIX has excellent capabilities for measuring bulk particle production—such as the...
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Gábor Kasza23/09/2025, 09:50Collectivity in high energy collisions: jets, flows, and other mechanismsTalk
In high-energy heavy-ion collisions, a nearly perfect fluid is formed, known as the strongly coupled quark-gluon plasma (QGP). After a short thermalization period, the evolution of this medium can be described by the equations of relativistic hydrodynamics. As the system expands and cools, the QGP undergoes a transition into hadronic matter, marking the onset of quark confinement. Direct...
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Airton Deppman (Universidade de São Paulo)23/09/2025, 10:15Collectivity in high energy collisions: jets, flows, and other mechanismsTalk
We present a detailed analysis of the nuclear modification factor $R_{AA}$ for charged particles produced in central Pb-Pb collisions at LHC energies, incorporating dynamical effects within a nonextensive framework. The study is based on a solution of the Plastino-Plastino Equation (PPE), a nonlinear Fokker-Planck-type equation that emerges naturally in the context of Tsallis nonextensive...
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Ana Mizher (UNICID)23/09/2025, 11:10Collectivity in high energy collisions: jets, flows, and other mechanismsTalk
An utterly intense magnetic field is expected to be generated in non-central heavy-ion collisions. Despite intense effort during the last few years, a clear signal of this field has not yet been found.
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We show that a very clear signal of the presence of a strong magnetic field during the early stage of a high-energy heavy-ion collision is provided by the decay of the 𝑍0 into dimuon pairs. We... -
Riccardo Longo (Univ. Illinois at Urbana Champaign (US))25/09/2025, 17:55Collectivity in high energy collisions: jets, flows, and other mechanismsTalk
In July 2025, the LHC successfully carried out its first light-ion collision programme, delivering substantial luminosities for proton–oxygen, oxygen–oxygen, and neon–neon collisions across the LHC experiments. These new datasets offer unique opportunities to study the quark–gluon plasma in lighter nuclear systems and to explore the role of initial-state configurations in nuclear...
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Larisa Bravina25/09/2025, 18:20Collectivity in high energy collisions: jets, flows, and other mechanismsTalk
A+A collisions at BES RHIC energies were generated in UrQMD and SMASH MC Models and compared with results in the box with periodic boundary conditions.
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The comparison of pt spectra of different particles with Boltzmann and Tsallis distributions at different time slices has been done.
Our study indicates that - Tsallis distribution better matches the particle pT –spectra both for the...