Identified particle production, azimuthal anisotropy, and interferometry measurements in Au+Au collisions at √sNN=9.2 GeV

Abelev, B. I. and Planinić, Mirko and Poljak, Nikola and Zoulkarneeva, Y. (STAR Collaboration) (2010) Identified particle production, azimuthal anisotropy, and interferometry measurements in Au+Au collisions at √sNN=9.2 GeV. Physical Review C, 81 (2). pp. 24911-19. ISSN 0556-2813

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We present the first measurements of identified hadron production, azimuthal anisotropy, and pion interferometry from Au+Au collisions below the nominal injection energy at the BNL Relativistic Heavy-Ion Collider (RHIC) facility. The data were collected using the large acceptance solenoidal tracker at RHIC (STAR) detector at √sNN=9.2 GeV from a test run of the collider in the year 2008. Midrapidity results on multiplicity density dN/dy in rapidity y, average transverse momentum <pT>, particle ratios, elliptic flow, and Hanbury-Brown–Twiss (HBT) radii are consistent with the corresponding results at similar √sNN from fixed-target experiments. Directed flow measurements are presented for both midrapidity and forward-rapidity regions. Furthermore the collision centrality dependence of identified particle dN/dy, <pT>, and particle ratios are discussed. These results also demonstrate that the capabilities of the STAR detector, although optimized for √sNN=200 GeV, are suitable for the proposed QCD critical-point search and exploration of the QCD phase diagram at RHIC.

Item Type: Article
Keywords: heavy ion, scattering gold hadron, hadroproduction yield, ratio quantum chromodynamics, critical phenomena Brookhaven RHIC Coll angular distribution, anisotropy rapidity dependence STAR Hanbury-Brown-Twiss effect transverse momentum elliptic flow correlation, two-pion particle flow impact parameter, dependence freeze-out 9.2 GeV-cms/nucleon
Date: February 2010
Subjects: NATURAL SCIENCES > Physics
Additional Information: Copyright (2010) by the American Physical Society.
Divisions: Faculty of Science > Department of Physics
Project code: 119-0982887-1006
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 10 Jun 2014 09:31
Last Modified: 24 Feb 2016 15:37

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