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Disappearance of partonic collectivity in √s.sub.NN./sub. = 3 GeV Au+Au collisions at RHIC
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SYSNO ASEP 0559794 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Disappearance of partonic collectivity in √sNN = 3 GeV Au+Au collisions at RHIC Author(s) Abdallah, M. S. (EG)
Aboona, B. E. (US)
Adam, J. (US)
Adamczyk, L. (PL)
Bielčík, J. (CZ)
Bielčíková, Jana (UJF-V) RID, ORCID, SAI
Federič, Pavol (UJF-V) ORCID, SAI
Holub, L. (CZ)
Chaloupka, P. (CZ)
Kosarzewski, L. K. (CZ)
Kramárik, L. (CZ)
Líčeník, Robert (UJF-V) ORCID, SAI
Ponimatkin, Georgij (UJF-V) ORCID, SAI
Prozorova, V. (CZ)
Robotková, Monika (UJF-V) ORCID, SAI
Rusňák, Jan (UJF-V) RID, ORCID, SAI
Šimko, Miroslav (UJF-V) ORCID, SAI
Šumbera, Michal (UJF-V) RID, ORCID, SAI
Truhlář, T. (CZ)
Trzeciak, B. A. (CZ)
Vaněk, Jan (UJF-V) ORCID, SAINumber of authors 396 Article number 137003 Source Title Physics Letters. B. - : Elsevier - ISSN 0370-2693
Roč. 827, APR (2022)Number of pages 7 s. Publication form Print - P Language eng - English Country NL - Netherlands Keywords STAR experiment ; heavy ion collisions OECD category Nuclear physics R&D Projects LTT18002 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LM2018109 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Open access Institutional support UJF-V - RVO:61389005 UT WOS 000820935000044 EID SCOPUS 85125955273 DOI 10.1016/j.physletb.2022.137003 Annotation We report on the measurements of directed flow v(1) and elliptic flow v(2) for hadrons (pi(+/-), K-+/-, K-S(0), p, phi, Lambda and Xi(-)) from Au+Au collisions at root s(NN) = 3GeV and v(2) for (pi(+/-), K-+/-, p and (p) over bar) at 27 and 54.4GeV with the STAR experiment. While at the two higher energy midcentral collisions the number-of-constituent-quark (NCQ) scaling holds, at 3GeV the v(2) at midrapidity is negative for all hadrons and the NCQ scaling is absent. In addition, the v(1) slopes at midrapidity for almost all observed hadrons are found to be positive, implying dominant repulsive baryonic interactions. The features of negative v2 and positive v(1) slope at 3GeV can be reproduced with a baryonic mean-field in transport model calculations. These results imply that the medium in such collisions is likely characterized by baryonic interactions. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2023 Electronic address https://doi.org/10.1016/j.physletb.2022.137003
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