Conveners
Contributed Session 5: Collective dynamics, Correlations and fluctuations & QGP in small systems
- Xin-Nian Wang
Description
TBU
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Jiangyong Jia (Stony Brook University (US))08/11/2021, 10:00Experiment
High-energy heavy-ion collisions, a branch of nuclear physics that focus on study of quark-gluon plama (QGP) and nuclear phase diagram, have always assumed an initial condition from the nuclear structure physics, e.g. the Woods-Saxon geometry. Recent progress in hydrodynamic modeling together with the wealth of precision collective flow data, especially from the Isobar collisions, however,...
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Dr Chunjian Zhang (stony brook university)08/11/2021, 10:17Experiment
Collective phenomena in heavy-ion collisions are very sensitive to initial geometry including nuclei deformation effects. In the hydrodynamic model description of heavy ion collisions, the final-state anisotropic flow $v_n$ are linearly related to the strength of the multi-pole shape of the nucleon density distribution in the transverse plane $\epsilon_n$, $v_n \propto \epsilon_n$. The...
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Dr Sangwook Ryu (Wayne State University)08/11/2021, 10:34Theory
We systematically study the hyperon global polarization's sensitivity to the collision systems' initial longitudinal flow velocity in hydrodynamic simulations. By explicitly imposing local energy-momentum conservation when mapping the initial collision geometry to macroscopic hydrodynamic fields, we study the evolution of systems' orbital angular momentum (OAM) and fluid vorticity. We find...
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Mr Kosuke Okubo (for the STAR collaboration) (University of Tsukuba)08/11/2021, 10:51Experiment
Non-central heavy-ion collisions produce a large angular momentum that leads to vorticity of the created system.
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Due to the spin-orbit coupling, spin directions of particles are aligned with the orbital angular momentum of the system.
Global polarization of $\Lambda$ and $\overline{\Lambda}$ hyperons has been measured in Au+Au collisions from $\sqrt{\rm{s_{NN}}}$ = 7.7 GeV to 200... -
Ashik Ikbal Sheikh (Kent State University)08/11/2021, 11:08Experiment
We report the first measurement of the rapidity-odd directed flow ($v_1$) of multi-strange baryons ($\Xi$ and $\Omega$) in Au+Au collisions as recorded by the STAR detector at the Relativistic Heavy Ion Collider.
We focus on particle species where all constituent quarks are produced, as opposed to possibly transported, and demonstrate using a novel analysis method that the coalescence sum...
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Dr Yapeng Zhang (Institute of Modern Physics, CAS)08/11/2021, 11:25Experiment
Collective flow has been commonly used for studying the properties of matter created in high-energy heavy-ion collisions, due to its high sensitivity on early stage collision dynamics. The first-order Fourier coefficient of azimuthal distributions of produced particles $v_1$, also called directed flow, has been analyzed for different particle species from the lightest mesons to light nuclei in...
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Junlee Kim (Jeonbuk National University (KR))08/11/2021, 11:42Experiment
In this talk, we will present the recent results on two-particle correlations in high-multiplicity pp collisions at $\sqrt{s}=$~13~TeV and p--Pb collisions at $\sqrt{s_{\mathrm{NN}}}=$~5.02~TeV from the ALICE Collaboration. The origin of long-range modulations remains an open question, and can be indicating collective dynamics in both small and large systems. We will present recent...
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Dr Myungkuk Kim (UNIST)08/11/2021, 11:59Theory
Transport theory can extract microscopic information in heavy-ion collisions of low-energy region. Though many transport codes have been emerged in recent years, there is not any codes optimized for Korean HIC acclerator. We initiated a new project so called DJBUU project with easy handling in order to prepare experiments in Rare isotope Accelerator complex for ON-line experiments (RAON). One...
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