The VII-th International Conference on the Initial Stages of High-Energy Nuclear Collisions : Initial Stages 2023

Factorization-breaking coefficients and $p_T$-dependent flow correlations for spherical and deformed nuclei collisions

Not scheduled

20m

Copenhagen

Poster The initial stages and nuclear structure in heavy-ion collisions

Speaker

Rupam Samanta (AGH University of Science and Technology)

Description

Flow fluctuation in ultra-relativistic heavy-ion collision can be probed by studying the flow decorrelation in transverse momenta or the factorization-breaking coefficients between the harmonic flow in different transverse momentum bins. In particular, by constructing such factorization coefficients between the squares of the flow, the contribution of flow-magnitude and flow-angle decorrelation to the total flow-vector decorrelation could be separately understood. To ease the experimental difficulties, one of the flow can be taken $p_T$-dependent and the other flow as momentum averaged. We study such factorization coefficients for Pb+Pb collision at LHC energy and compare with the ALICE data. We also study similar factorization coefficients for the collision of deformed nuclei e.g U+U collision at RHIC energy and see the nuclear deformation effect on these coefficients. Additionally, we study similar $p_T$-dependent mixed-flow correlations, e.g. $V_2^2-V_4(p)$ , $V_2V_3-V_5(p)$ etc. which can serve as a non-linear medium response, for both spherical and deformed nuclei collisions. Moreover, we study these correlation coefficients in the isobar collision systems, e.g. Ru+Ru and Zr+Zr collisions, which having the same mass but different deformations, provide as an ideal candidate to study the effect of nuclear structure in heavy-ion collisions (P. Bozek , R. Samanta, arXiv:2109.07781, arXiv:2301.10659 ).

Presentation materials

Initial_Stages_2023_poster_Rupam.pdf