Correlation between mean transverse momentum and anisotropic flow in heavy-ion collisions

Giacalone, Giuliano; Gardim, Fernando G.; Noronha-Hostler, Jacquelyn; Ollitrault, Jean-Yves

doi:10.1103/physrevc.103.024909

Title: Correlation between mean transverse momentum and anisotropic flow in heavy-ion collisions

Journal Article · Thu Feb 18 00:00:00 EST 2021 · Physical Review C

DOI:https://doi.org/10.1103/physrevc.103.024909· OSTI ID:1836552

^[1];

^[2]; Noronha-Hostler, Jacquelyn ^[3];

^[1]

Univ. Paris-Saclay, Gif-sur-Yvette (France)
Universidade Federal de Alfenas (Brazil)
Univ. of Illinois at Urbana-Champaign, IL (United States)

The correlation between the mean transverse momentum of outgoing particles, $$\langle{p_t}\rangle$$, and the magnitude of anisotropic flow, v_n, has recently been measured in Pb+Pb collisions at the CERN Large Hadron Collider, as a function of the collision centrality. Here, we confirm the previous observation that event-by-event hydrodynamics predicts a correlation between v_n and $$\langle{p_t}\rangle$$ that is similar to that measured in data. We show that the magnitude of this correlation can be directly predicted from the initial condition of the hydrodynamic calculation, for n = 2, 3, if one replaces v_n by the corresponding initial-state anisotropy, ε_n, and $$\langle{p_t}\rangle$$ by the total energy per unit rapidity of the fluid at the beginning of the hydrodynamic expansion.

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Research Organization:: Univ. of Illinois at Urbana-Champaign, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP); Conselho Nacional de Desenvolvimento Cientifico (CNPq); Instituto Nacional de Ciência e Tecnologia: Física Nuclear e Aplicações (INCT-FNA); São Paulo Research Foundation (FAPESP); Univ. of São Paulo

Grant/Contract Number:: SC0020633; 312932/2018-9; 464898/2014-5; 2018/24720-6

OSTI ID:: 1836552

Journal Information:: Physical Review C, Vol. 103, Issue 2; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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