Quark Matter 2025

Session

Parallel session 16

8 Apr 2025, 10:50

Goethe University Frankfurt, Campus Westend, Theodor-W.-Adorno-Platz 1, 60629 Frankfurt am Main, Germany

Conveners

Parallel session 16: Collective dynamics & small systems II

• Charles Gale

534. Quarkonia collectivity in large collision systems with ALICE

Chi Zhang (Université Paris-Saclay (FR))

08/04/2025, 10:50

Collective dynamics & small systems

Oral

Quarkonium production has long been identified as one of the golden probes to study the quark-gluon plasma (QGP). Among many observables, the measurement of azimuthal anisotropies in quarkonium production has a special role to shed light on the collective behavior of particles in a strongly interacting medium. In particular, the magnitude of the $\rm{J}/\psi$ elliptic flow measured at the LHC...

476. Latest Anisotropic Flow Measurements in Pb–Pb Collisions with ALICE: New Insights into QGP Properties

Zhiyong Lu (China Institute of Atomic Energy (CN))

08/04/2025, 11:10

Collective dynamics & small systems

Oral

Characterizing the quark--gluon plasma (QGP) created in ultrarelativistic heavy-ion collisions requires identifying observables sensitive to different stages of the collision. Recent studies show that measuring collective anisotropic flow and the complex interplay between its Fourier harmonics ($v_n$) and $(\Psi_n$) can effectively disentangle contributions from various collision phases,...

473. Exploring the origin of collective phenomena in small collision systems with ALICE at the LHC

Dr Debojit Sarkar (Niels Bohr Institute, University of Copenhagen, Denmark)

08/04/2025, 11:30

Collective dynamics & small systems

Oral

The observation of collective-like behaviors in pp and p–Pb collisions at LHC energies has sparked debate about the similarities between the dynamics of small systems and heavy-ion collisions. In this talk, our latest published results are presented, showing baryon-meson $v_{\rm 2}$ grouping (within 1$\sigma$) and significant splitting (approximately 5$\sigma$) at intermediate $p_{\rm T}$ in...

141. Initial momentum and conserved charges to final flow

Prof. Matthew William Luzum (University of São Paulo)

08/04/2025, 11:50

Collective dynamics & small systems

Oral

The evolution of a relativistic heavy-ion collision is typically understood as a process that transmutes the initial geometry of the system into the final momentum distribution of observed hadrons, which can be described via a cumulant expansion of the initial distribution of energy density and is represented at leading order as the well-known eccentricity scaling of anisotropic flow. We...

115. BHAC-QGP: three-dimensional MHD simulations of relativistic heavy-ion collisions

Ashutosh Dash

08/04/2025, 12:10

Collective dynamics & small systems

Oral

We present BHAC-QGP, an advanced numerical code designed to simulate the evolution of quark-gluon plasma (QGP) in heavy-ion collisions with enhanced accuracy in the presence of magnetic field. Building on the foundation of the Black Hole Accretion Code (BHAC), which solves general-relativistic magnetohydrodynamic (GRMHD) equations for astrophysical phenomena, BHAC-QGP adapts these capabilities...