Beam-energy dependence of the directed flow of deuterons in Au+Au collisions

STAR Collaboration

doi:10.1103/PhysRevC.102.044906

Beam-energy dependence of the directed flow of deuterons in Au+Au collisions

STAR Collaboration

Institute of Higher Research

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

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20 Scopus citations

Abstract

We present a measurement of the first-order azimuthal anisotropy v1 of deuterons from Au+Au collisions at sNN=7.7, 11.5, 14.5, 19.6, 27, and 39 GeV recorded with the STAR experiment at the Relativistic Heavy Ion Collider (RHIC). The energy dependence of the v1(y) slope, dv1/dy|y=0, for deuterons, where y is the rapidity, is extracted for semicentral collisions (10%-40% centrality) and compared with that of protons. While the v1(y) slopes of protons are generally negative for sNN>10GeV, those for deuterons are consistent with zero, a strong enhancement of the v1(y) slope of deuterons is seen at the lowest collision energy (the largest baryon density) at sNN=7.7GeV. In addition, we report the transverse momentum dependence of v1 for protons and deuterons. The experimental results are compared with transport and coalescence models.

Original language	English
Article number	044906
Journal	Physical Review C
Volume	102
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevC.102.044906
State	Published - 16 Oct 2020

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10.1103/PhysRevC.102.044906

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@article{6b1bae557eed4d519c126379efbe8f77,

title = "Beam-energy dependence of the directed flow of deuterons in Au+Au collisions",

abstract = "We present a measurement of the first-order azimuthal anisotropy v1 of deuterons from Au+Au collisions at sNN=7.7, 11.5, 14.5, 19.6, 27, and 39 GeV recorded with the STAR experiment at the Relativistic Heavy Ion Collider (RHIC). The energy dependence of the v1(y) slope, dv1/dy|y=0, for deuterons, where y is the rapidity, is extracted for semicentral collisions (10\%-40\% centrality) and compared with that of protons. While the v1(y) slopes of protons are generally negative for sNN>10GeV, those for deuterons are consistent with zero, a strong enhancement of the v1(y) slope of deuterons is seen at the lowest collision energy (the largest baryon density) at sNN=7.7GeV. In addition, we report the transverse momentum dependence of v1 for protons and deuterons. The experimental results are compared with transport and coalescence models.",

author = "J. Adam and L. Adamczyk and Adams, \{J. R.\} and Adkins, \{J. K.\} and S. Kabana and \{STAR Collaboration\}",

note = "Publisher Copyright: {\textcopyright} 2020 American Physical Society.",

year = "2020",

month = oct,

day = "16",

doi = "10.1103/PhysRevC.102.044906",

language = "English",

volume = "102",

journal = "Physical Review C",

issn = "2469-9985",

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TY - JOUR

T1 - Beam-energy dependence of the directed flow of deuterons in Au+Au collisions

AU - Adam, J.

AU - Adamczyk, L.

AU - Adams, J. R.

AU - Adkins, J. K.

AU - Kabana, S.

AU - STAR Collaboration

PY - 2020/10/16

Y1 - 2020/10/16

N2 - We present a measurement of the first-order azimuthal anisotropy v1 of deuterons from Au+Au collisions at sNN=7.7, 11.5, 14.5, 19.6, 27, and 39 GeV recorded with the STAR experiment at the Relativistic Heavy Ion Collider (RHIC). The energy dependence of the v1(y) slope, dv1/dy|y=0, for deuterons, where y is the rapidity, is extracted for semicentral collisions (10%-40% centrality) and compared with that of protons. While the v1(y) slopes of protons are generally negative for sNN>10GeV, those for deuterons are consistent with zero, a strong enhancement of the v1(y) slope of deuterons is seen at the lowest collision energy (the largest baryon density) at sNN=7.7GeV. In addition, we report the transverse momentum dependence of v1 for protons and deuterons. The experimental results are compared with transport and coalescence models.

AB - We present a measurement of the first-order azimuthal anisotropy v1 of deuterons from Au+Au collisions at sNN=7.7, 11.5, 14.5, 19.6, 27, and 39 GeV recorded with the STAR experiment at the Relativistic Heavy Ion Collider (RHIC). The energy dependence of the v1(y) slope, dv1/dy|y=0, for deuterons, where y is the rapidity, is extracted for semicentral collisions (10%-40% centrality) and compared with that of protons. While the v1(y) slopes of protons are generally negative for sNN>10GeV, those for deuterons are consistent with zero, a strong enhancement of the v1(y) slope of deuterons is seen at the lowest collision energy (the largest baryon density) at sNN=7.7GeV. In addition, we report the transverse momentum dependence of v1 for protons and deuterons. The experimental results are compared with transport and coalescence models.

UR - https://www.scopus.com/pages/publications/85094100808

U2 - 10.1103/PhysRevC.102.044906

DO - 10.1103/PhysRevC.102.044906

M3 - Article

AN - SCOPUS:85094100808

SN - 2469-9985

VL - 102

JO - Physical Review C

JF - Physical Review C

IS - 4

M1 - 044906

ER -

Beam-energy dependence of the directed flow of deuterons in Au+Au collisions

Abstract

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