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发布时间：2026-01-07 17:49

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: [email protected] 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

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Related DOI: https://doi.org/10.1134/S106377881105022X

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