Inclusive charged hadron elliptic flow in Au+Au collisions at root s(NN)=7.7-39 GeV

Adamczyk, L.; Agakishiev, G.; Aggarwal, M. M.; Ahammed, Z.; Alakhverdyants, A. V.; Alekseev, I.; Alford, J.; Anderson, B. D.; Anson, C.; Barnovská, Zuzana; Bielčík, J.; Bielčíková, Jana; Chaloupka, Petr; Chung, Paul; Hajková, O.; Kapitán, Jan; Pachr, M.; Rusňák, Jan; Šumbera, Michal; Tlustý, David

doi:https://dx.doi.org/10.1103/PhysRevC.86.054908

Number of the records: 1

Inclusive charged hadron elliptic flow in Au+Au collisions at root s(NN)=7.7-39 GeV

1.

SYSNO ASEP	0388209
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Inclusive charged hadron elliptic flow in Au+Au collisions at root s(NN)=7.7-39 GeV
Author(s)	Adamczyk, L. (PL) Agakishiev, G. (RU) Aggarwal, M. M. (IN) Ahammed, Z. (IN) Alakhverdyants, A. V. (RU) Alekseev, I. (RU) Alford, J. (US) Anderson, B. D. (US) Anson, C. (US) Barnovská, Zuzana (UJF-V) Bielčík, J. (CZ) Bielčíková, Jana (UJF-V)_{RID, ORCID, SAI} Chaloupka, Petr (UJF-V)_RID Chung, Paul (UJF-V) Hajková, O. (CZ) Kapitán, Jan (UJF-V) Pachr, M. (CZ) Rusňák, Jan (UJF-V)_{RID, ORCID, SAI} Šumbera, Michal (UJF-V)_{RID, ORCID, SAI} Tlustý, David (UJF-V)
Number of authors	373
Source Title	Physical Review. C - ISSN 0556-2813 Roč. 86, č. 5 (2012), s. 054908
Number of pages	16 s.
Language	eng - English
Country	US - United States
Keywords	heavy ion collision ; hadron production ; STAR
Subject RIV	BG - Nuclear, Atomic and Molecular Physics, Colliders
R&D Projects	LA09013 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Institutional support	UJF-V - RVO:61389005
UT WOS	000311141400004
DOI	10.1103/PhysRevC.86.054908
Annotation	A systematic study is presented for centrality, transverse momentum (p(T)), and pseudorapidity (eta) dependence of the inclusive charged hadron elliptic flow (v(2)) at midrapidity (vertical bar eta vertical bar < 1.0) in Au + Au collisions at root s(NN) = 7.7, 11.5, 19.6, 27, and 39 GeV. The results obtained with different methods, including correlations with the event plane reconstructed in a region separated by a large pseudorapidity gap and four-particle cumulants (v(2){4}), are presented to investigate nonflow correlations and v(2) fluctuations. We observe that the difference between v(2){2} and v(2){4} is smaller at the lower collision energies. Values of v(2), scaled by the initial coordinate space eccentricity, v(2)/epsilon, as a function of p(T) are larger in more central collisions, suggesting stronger collective flow develops in more central collisions, similar to the results at higher collision energies. These results are compared to measurements at higher energies at the Relativistic Heavy Ion Collider (root s(NN) = 62.4 and 200 GeV) and at the Large Hadron Collider (Pb + Pb collisions at root s(NN) = 2.76 TeV). The v(2)(pT) values for fixed pT rise with increasing collision energy within the pT range studied (<2 GeV/c). A comparison to viscous hydrodynamic simulations is made to potentially help understand the energy dependence of v(2)(pT). We also compare the v(2) results to UrQMD and AMPT transport model calculations, and physics implications on the dominance of partonic versus hadronic phases in the system created at beam energy scan energies are discussed.
Workplace	Nuclear Physics Institute
Contact	Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228
Year of Publishing	2013

Number of the records: 1