Conveners
Parallel Session - Collective dynamics II
- Tetsufumi Hirano (Sophia Univ)
Multi-particle azimuthal cumulants are measured as a function of centrality and transverse momentum in 5.02 TeV Pb+Pb collisions. These cumulants provide information on the event-by-event fluctuations of harmonic flow coefficients $v_{n}$ and correlated fluctuations between two harmonics $v_{n}$ and $v_{m}$.
For the first time, a non-zero four-particle cumulant is observed for dipolar flow,...
The thermalized QCD matter formed in heavy-ion collisions is tilted in the reaction plane as a function of rapidity, while the production profile of partons from hard scatterings is symmetric in rapidity [1]. This leads to a rapidity-odd directed flow (v1) for high-pT hadrons and can provide valuable constraints on the initial longitudinal distribution of the fireball as well as the path...
One of the most important objectives of Beam energy scan (BES) program at the Relativistic Heavy ion collider (RHIC) is to search for the critical point in the QCD matter via performing nucleus-nucleus collisions with wide collision energies (7.7 - 200 GeV). At such energies, the produced quark-gluon plasma (QGP) matter has sizable net baryon density at the central rapidity region due to...
An outstanding puzzle in the field is the mechanism that generates collective motion of heavy quarks (charm and bottom) in large collision systems. The measured azimuthal anisotropies of electrons from heavy quarks closely resemble those of light quarks, despite the enormous differences in quark mass. In order to further understand the quark mass dependence of the flow, we have separated the...
In ultrarelativistic heavy-ion collisions, a very strong (on the order of $10^{16}~\mathrm{Tesla}$) and transient (lifetime on the order of $10^{-1}~\mathrm{fm/c}$) electromagnetic (EM) field is expected to be generated inside the medium formed in the collision. This EM field, generated by the collision participants and spectators, is predicted to produce a difference in the $v_n$ harmonics...
New results on the production of light nuclei, including deuterons, tritons,
$^{3}\rm{He}$, $^{4}\rm{He}$ and the corresponding anti-nuclei, in Pb-Pb collisions
at $\sqrt{s_{\rm NN}}$ = 2.76 TeV and $\sqrt{s_{\rm NN}}$ = 5.02 TeV will be presented
and compared with theoretical predictions to provide insight into their production
mechanisms in heavy-ion collisions. Those results will be...
