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

Author(s)
Surrow, Bernd; Balewski, Jan T.; Betancourt, Michael Joseph; Hays-Wehle, James Prewitt; Jones, Christopher LaDon; Kocoloski, Adam Philip; Leight, William Axel; Sakuma, Tai; Seele, Joseph Patrick; Stephans, George S. F.; Corliss, Ross Cameron; Hoffman, Alan Michael; Milner, Richard G; Redwine, Robert P; van Nieuwenhuizen, Gerrit J; Walker, Matthew H; ... Show more Show less
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Alternative title
Identified particle production, azimuthal anisotropy, and interferometry measurements in Au+Au collisions at √sNN=9.2 GeV
Terms of use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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Abstract
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.
Date issued
2010-02
URI
http://hdl.handle.net/1721.1/57439
Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science; Massachusetts Institute of Technology. School of Science
Journal
Physical Review C
Publisher
American Physical Society
Citation
STAR Collaboration et al. “Identified particle production, azimuthal anisotropy, and interferometry measurements in Au+Au collisions at [sqrt]sNN=9.2 GeV.” Physical Review C 81.2 (2010): 024911. © 2010 American Physical Society.
Version: Final published version
ISSN
0556-2813

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