Disappearance of partonic collectivity in sNN=3 GeV Au+Au collisions at RHIC

STAR Collaboration

doi:10.1016/j.physletb.2022.137003

Disappearance of partonic collectivity in s_NN=3 GeV Au+Au collisions at RHIC

STAR Collaboration

Instituto de Alta Investigación

American University in Cairo
Texas A&M University
Brookhaven National Laboratory
AGH University of Krakow
Ohio State University
University of Kentucky
Joint Institute for Nuclear Research
Panjab University
Variable Energy Cyclotron Centre
Alikhanov Institute for Theoretical and Experimental Physics
Moscow Engineering Physics Institute
Central China Normal University
Kent State University
Universidad de Tarapacá
University of California at Riverside
University of Houston
Stony Brook University
University of Jammu
Czech Technical University in Prague
Czech Academy of Sciences
Rice University
Chinese Academy of Sciences
Yale University
University of California at Davis
Lawrence Berkeley National Laboratory
University of California at Los Angeles
National Cheng Kung University
Shandong University
Fudan University
University of Science and Technology of China
Tsinghua University
University of California at Berkeley
Eötvös Loránd University
Abilene Christian University
Heidelberg University
Institute for High Energy Physics
Wayne State University
Indian Institute of Science Education and Research, Berhampur
University of Tsukuba
University of Illinois at Chicago
Lehigh University
Purdue University
Southern Connecticut State University
Technische Universität Darmstadt
Temple University
Valparaiso University
Indian Institute of Science Education and Research, Tirupati
CAS - Institute of Modern Physics
Pennsylvania State University
Indiana University Bloomington
Warsaw University of Technology
Goethe University Frankfurt
National Institute of Science Education and Research
University of Texas at Austin
Rutgers - The State University of New Jersey, New Brunswick
Institute of Nuclear Physics PAN
Max Planck Institute for Physics (Werner Heisenberg Institute)
Creighton University
Indian Institute of Technology Patna
Argonne National Laboratory
Universidade de São Paulo
Huzhou University
Michigan State University

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97 Citas (Scopus)

Resumen

We report on the measurements of directed flow v₁ and elliptic flow v₂ for hadrons (π^±, K^±, K_S⁰, p, ϕ, Λ and Ξ⁻) from Au+Au collisions at s_NN=3 GeV and v₂ for (π^±, K^±, p and p‾) at 27 and 54.4 GeV with the STAR experiment. While at the two higher energy midcentral collisions the number-of-constituent-quark (NCQ) scaling holds, at 3 GeV the v₂ at midrapidity is negative for all hadrons and the NCQ scaling is absent. In addition, the v₁ 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 v₁ slope at 3 GeV 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.

Idioma original	Inglés
Número de artículo	137003
Publicación	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volumen	827
DOI	https://doi.org/10.1016/j.physletb.2022.137003
Estado	Publicada - 10 abr 2022

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10.1016/j.physletb.2022.137003

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title = "Disappearance of partonic collectivity in sNN=3 GeV Au+Au collisions at RHIC",

abstract = "We report on the measurements of directed flow v1 and elliptic flow v2 for hadrons (π±, K±, KS0, p, ϕ, Λ and Ξ−) from Au+Au collisions at sNN=3 GeV and v2 for (π±, K±, p and p‾) at 27 and 54.4 GeV with the STAR experiment. While at the two higher energy midcentral collisions the number-of-constituent-quark (NCQ) scaling holds, at 3 GeV the v2 at midrapidity is negative for all hadrons and the NCQ scaling is absent. In addition, the v1 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 v1 slope at 3 GeV 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.",

author = "Abdallah, \{M. S.\} and Aboona, \{B. E.\} and J. Adam and L. Adamczyk and S. Kabana and \{STAR Collaboration\}",

note = "Publisher Copyright: {\textcopyright} 2022 The Author(s)",

year = "2022",

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day = "10",

doi = "10.1016/j.physletb.2022.137003",

language = "English",

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TY - JOUR

T1 - Disappearance of partonic collectivity in sNN=3 GeV Au+Au collisions at RHIC

AU - Abdallah, M. S.

AU - Aboona, B. E.

AU - Adam, J.

AU - Adamczyk, L.

AU - Kabana, S.

AU - STAR Collaboration

PY - 2022/4/10

Y1 - 2022/4/10

N2 - We report on the measurements of directed flow v1 and elliptic flow v2 for hadrons (π±, K±, KS0, p, ϕ, Λ and Ξ−) from Au+Au collisions at sNN=3 GeV and v2 for (π±, K±, p and p‾) at 27 and 54.4 GeV with the STAR experiment. While at the two higher energy midcentral collisions the number-of-constituent-quark (NCQ) scaling holds, at 3 GeV the v2 at midrapidity is negative for all hadrons and the NCQ scaling is absent. In addition, the v1 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 v1 slope at 3 GeV 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.

AB - We report on the measurements of directed flow v1 and elliptic flow v2 for hadrons (π±, K±, KS0, p, ϕ, Λ and Ξ−) from Au+Au collisions at sNN=3 GeV and v2 for (π±, K±, p and p‾) at 27 and 54.4 GeV with the STAR experiment. While at the two higher energy midcentral collisions the number-of-constituent-quark (NCQ) scaling holds, at 3 GeV the v2 at midrapidity is negative for all hadrons and the NCQ scaling is absent. In addition, the v1 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 v1 slope at 3 GeV 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.

UR - https://www.scopus.com/pages/publications/85125955273

U2 - 10.1016/j.physletb.2022.137003

DO - 10.1016/j.physletb.2022.137003

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SN - 0370-2693

VL - 827

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

M1 - 137003