Publication:
Model study of the energy dependence of the correlation between anisotropic flow and the mean transverse momentum in Au+Au collisions

Дата
2022
Авторы
Magdy, N.
Karpenko, I.
Lacey, R. A.
Parfenov, P.
Taranenko, A.
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Научные группы
Организационные подразделения
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Организационная единица
Институт ядерной физики и технологий
Цель ИЯФиТ и стратегия развития - создание и развитие научно-образовательного центра мирового уровня в области ядерной физики и технологий, радиационного материаловедения, физики элементарных частиц, астрофизики и космофизики.
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Аннотация
© 2022 American Physical Society.A hybrid model that employs the hadron-string transport model UrQMD and the (3+1)-dimensional relativistic viscous hydrodynamic code vHLLE, is used to investigate the beam energy dependence of the correlation coefficient ρ(v22,[pT]) between the average transverse momentum [pT] of hadrons emitted in an event and the square of the anisotropic flow coefficient v22. For Au+Au collisions, the model predicts characteristic patterns for the energy and event-shape dependence of the variances for [pT] and vn2 [Var([pT] and Var(v22)], and the covariance of vn2 and [pT] [cov(v22,[pT])], consistent with the attenuation effects of the specific shear viscosity η/s. In contrast, ρ(v22,[pT]) is predicted to be insensitive to the beam energy but sensitive to the initial-state geometry of the collisions. These observations suggest that a precise set of measurements for Var([pT]), Var(v22), cov(v22,[pT]) and ρ(v22,[pT]) as a function of beam energy and event shape, could serve to constrain better the eccentricities and their fluctuations over the entire span of beam energies, and consequently aid precision extraction of the temperature and baryon chemical-potential dependence of η/s from the wealth of Au+Au data obtained in the RHIC beam energy scan.
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Model study of the energy dependence of the correlation between anisotropic flow and the mean transverse momentum in Au+Au collisions / Magdy, N. [et al.] // Physical Review C. - 2022. - 105. - № 4. - 10.1103/PhysRevC.105.044901
URI
https://www.doi.org/10.1103/PhysRevC.105.044901
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85128374185&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000789990900002
 https://openrepository.mephi.ru/handle/123456789/29019
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