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Nuclear Experiment

arXiv:1004.5582 (nucl-ex)
[Submitted on 30 Apr 2010]

Title:High-pT Spectra of Charged Hadrons in Au+Au Collisions at sqrt s_(NN)=9.2 GeV in STAR

Authors:M.V.Tokarev (for the STAR Collaboration)
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Abstract:The production of hadrons in heavy ions collisions at high $p_T$ provides an important information on mechanism of particle formation and constituent energy loss in medium. Such information is needed for search of a Critical Point and signatures of phase transition. Measurements by the STAR Collaboration of charged hadron production in Au+Au collisions at $\sqrt {s_{NN}}$=9.2 GeV over a wide transverse momentum $p_T=0.2-4.$ GeV/c and at mid-rapidity range are reported. It allows for a first measurement of the spectra for charged hadrons at high $p_T$ at this energy. The spectra demonstrate the dependence on centrality which enhances with $p_T$. The constituent energy loss and its dependence on transverse momentum of particle, and centrality of collisions are estimated in the $z$-scaling approach.
Comments: 5 pages, 5 figures, Talk presented at the Session-conference of the Russian Academy of Sciences, Physics of Fundamental Interactions, ITEP, Moscow, Russia, November 23-27, 2009 to be published in the Journal Physics of Atomic Nuclei (Yadernaya fizika). The author may be contacted via: tokarev@sunhe.this http URL
Subjects: Nuclear Experiment (nucl-ex); High Energy Physics - Experiment (hep-ex); High Energy Physics - Phenomenology (hep-ph)
Report number: preprint JINR E1-2010-54
Cite as: arXiv:1004.5582 [nucl-ex]
  (or arXiv:1004.5582v1 [nucl-ex] for this version)
  https://doi.org/10.48550/arXiv.1004.5582
Related DOI: https://doi.org/10.1134/S106377881105022X

Submission history

From: Mikhail Tokarev V [view email]
[v1] Fri, 30 Apr 2010 17:50:48 UTC (114 KB)
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