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Directed Flow of Identified Particles in Au plus Au Collisions at root S-NN=200 GeV at RHIC
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SYSNO ASEP 0486434 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Directed Flow of Identified Particles in Au plus Au Collisions at root S-NN=200 GeV at RHIC Author(s) Adamczyk, L. (PL)
Agakishiev, G. (RU)
Aggarwal, M. M. (IN)
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 356 Article number 202301 Source Title Physical Review Letters. - : American Physical Society - ISSN 0031-9007
Roč. 108, č. 20 (2012)Number of pages 6 s. Publication form Print - P Language eng - English Country US - United States Keywords STAR collaboration ; RHIC ; heavy ions collisions Subject RIV BG - Nuclear, Atomic and Molecular Physics, Colliders OECD category Nuclear physics R&D Projects LA09013 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UJF-V - RVO:61389005 UT WOS 000304064000006 EID SCOPUS 84861614829 DOI 10.1103/PhysRevLett.108.202301 Annotation STAR's measurements of directed flow (v(1)) around midrapidity for pi(+/-), K-+/-, K-S(0), p, and (p) over bar in Au + Au collisions at root s(NN) = 200 GeV are presented. A negative v(1) (y) slope is observed for most of produced particles (pi(+/-), K-+/-, K-S(0), p, and (p) over bar). In 5%-30% central collisions, a sizable difference is present between the v(1)(y) slope of protons and antiprotons, with the former being consistent with zero within errors. The v(1) excitation function is presented. Comparisons to model calculations (RQMD, UrQMD, AMPT, QGSM with parton recombination, and a hydrodynamics model with a tilted source) are made. For those models which have calculations of v(1) for both pions and protons, none of them can describe v(1()y) forpions and protons simultaneously. The hydrodynamics model with a tilted source as currently implemented cannot explain the centrality dependence of the difference between the v(1)(y) slopes of protons and antiprotons. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2018
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