DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Light nuclei collectivity from s NN = 3 GeV Au+Au collisions at RHIC

Journal Article · · Physics Letters. B
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; more »; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ORCiD logo; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; « less

In high-energy heavy-ion collisions, partonic collectivity is evidenced by the constituent quark number scaling of elliptic flow anisotropy for identified hadrons. A breaking of this scaling and dominance of baryonic interactions is found for identified hadron collective flow measurements in sNN = 3 GeV Au+Au collisions. In this paper, we report measurements of the first- and second-order azimuthal anisotropic parameters, v1 and v2, of light nuclei (d, t, 3He, 4He) produced in sNN = 3 GeV Au+Au collisions at the STAR experiment. An atomic mass number scaling is found in the measured v1 slopes of light nuclei at mid-rapidity. For the measured v2 magnitude, a strong rapidity dependence is observed. Unlike v2 at higher collision energies, the v2 values at mid-rapidity for all light nuclei are negative and no scaling is observed with the atomic mass number. Calculations by the Jet AA Microscopic Transport Model (JAM), with baryonic mean-field plus nucleon coalescence, are in good agreement with our observations, implying baryonic interactions dominate the collective dynamics in 3 GeV Au+Au collisions at RHIC.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Texas A & M Univ., College Station, TX (United States); Univ. of California, Los Angeles, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP)
Contributing Organization:
STAR Collaboration
Grant/Contract Number:
AC02-05CH11231; AC02-06CH11357; FG02-88ER40424; SC0012704; SC0017982
OSTI ID:
1835712
Report Number(s):
BNL-222476-2021-JAAM
Journal Information:
Physics Letters. B, Journal Name: Physics Letters. B Vol. 827; ISSN 0370-2693
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (23)

On the coalescence model for high energy nuclear reactions journal January 1981
STAR detector overview
  • Ackermann, K. H.; Adams, N.; Adler, C.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 499, Issue 2-3 https://doi.org/10.1016/S0168-9002(02)01960-5
journal March 2003
The STAR time projection chamber: a unique tool for studying high multiplicity events at RHIC
  • Anderson, M.; Berkovitz, J.; Betts, W.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 499, Issue 2-3 https://doi.org/10.1016/S0168-9002(02)01964-2
journal March 2003
A method to improve tracking and particle identification in TPCs and silicon detectors journal June 2006
Multigap RPCs in the STAR experiment at RHIC journal January 2012
Systematics of azimuthal asymmetries in heavy ion collisions in the regime journal February 2012
Resonance decay effects on anisotropy parameters journal September 2004
Searching for onset of deconfinement via hypernuclei and baryon-strangeness correlations journal February 2010
Hypernuclei, dibaryon and antinuclei production in high energy heavy ion collisions: Thermal production vs. coalescence journal July 2012
Applicability of Monte Carlo Glauber models to relativistic heavy-ion collision data journal October 2008
Deuterons from High-Energy Proton Bombardment of Matter journal January 1963
Methods for analyzing anisotropic flow in relativistic nuclear collisions journal September 1998
Directed flow of light nuclei in Au+Au collisions at 10.8 A GeV/ c journal February 1999
Mean-field effects on collective flow in high-energy heavy-ion collisions at 2–158 A GeV energies journal December 2005
Deuteron production from phase-space coalescence in the UrQMD approach journal January 2019
Directed, Elliptic, and Higher Order Flow Harmonics of Protons, Deuterons, and Tritons in Au + Au Collisions at s N N = 2.4     GeV journal December 2020
Light Fragment Production and Power Law Behavior in Au + Au Collisions journal April 1995
Fragment Flow in Au + Au Collisions journal September 1995
Elliptic Flow at Large Transverse Momenta from Quark Coalescence journal August 2003
Azimuthal Dependence of Collective Expansion for Symmetric Heavy-Ion Collisions journal February 2004
Determination of the Equation of State of Dense Matter journal October 2002
Measurement of deuteron spectra and elliptic flow in Pb–Pb collisions at $$\sqrt{s_{\mathrm {NN}}}$$ s NN = 2.76 TeV at the LHC journal October 2017
Collective Flow and Viscosity in Relativistic Heavy-Ion Collisions journal October 2013