Nuclear modification factor for J/ψ production in nucleus-nucleus collisions

  • The STAR Collaboration has offered an eminent nuclear modification factor of J/ψ at high pT and midrapidity produced in Cu-Cu collisions at √sNN=200 GeV. Recalling a prediction, we can understand that the feature of high-pT nuclear modification factor is related to cc produced by 2 → 1 and 2 → 2 partonic processes in deconfined matter, particularly in the prethermal stage and to the recombination of c and c. The nuclear modification factor at high pT is sensitive to the earliest form of deconfined matter that does not have a temperature.
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  • [1] TANG Z (STAR collaboration). J. Phys. G, 2008, 35: 1041352 Abelev B I et al. (STAR collaboration). Phys. Rev. C, 2009, 80: 0419023 Kharzeev D, Satz H. Phys. Lett. B, 1994, 334: 1554 XU X M, Kharzeev D, Satz H, WANG X N. Phys. Rev. C, 1996, 53: 30515 XU X M. Nucl. Phys. A, 2002, 697: 8256 XU X M. Nucl. Phys. A, 1999, 658: 1657 Braun-Munzinger P, Stachel J. Phys. Lett. B, 2000, 490: 1968 Thews R L, Schroedter M, Rafelski J. Phys. Rev. C, 2001, 63: 0549059 Grandchamp L, Rapp R. Phys. Lett. B, 2001, 523: 6010 Gorenstein M I, Kostyuk A P, Stocker H, Greiner W. Phys. Lett. B, 2001, 509: 27711 LIN Z W, Molnar D. Phys. Rev. C, 2003, 68: 04490112 Greco V, Ko C M, Rapp R. Phys. Lett. B, 2004, 595: 20213 YAN L, ZHUANG P, XU N. Phys. Rev. Lett., 2006, 97: 23230114 Caswell W E, Lepage G P. Phys. Lett. B, 1986, 167: 437; Lepage G P, Magnea L, Nakhleh C, Magnea U, Hornbostel K. Phys. Rev. D, 1992, 46: 4052; Bodwin G T, Braaten E, Lepage G P. Phys. Rev. D, 1995, 51: 112515 Peskin M E. Nucl. Phys. B, 1979, 156: 365; Bhanot G, Peskin M E. Nucl. Phys. B, 1979, 156: 39116 Barnes T, Swanson E S. Phys. Rev. D, 1992, 46: 131; Swanson E S. Ann. Phys. (N.Y.), 1992, 220: 7317 Eskola K J, WANG X N. Phys. Rev. D, 1994, 49: 128418 Lévai P, Muller B, WANG X N. Phys. Rev. C, 1995, 51: 332619 LIN Z, Gyulassy M. Phys. Rev. C, 1995, 51: 217720 Adare A et al. (PHENIX collaboration). Phys. Rev. Lett., 2008, 101: 122301
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XU Xiao-Ming and ZHOU Jie. Nuclear modification factor for J/ψ production in nucleus-nucleus collisions[J]. Chinese Physics C, 2011, 35(5): 463-466. doi: 10.1088/1674-1137/35/5/011
XU Xiao-Ming and ZHOU Jie. Nuclear modification factor for J/ψ production in nucleus-nucleus collisions[J]. Chinese Physics C, 2011, 35(5): 463-466.  doi: 10.1088/1674-1137/35/5/011 shu
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Received: 2010-08-12
Revised: 2010-11-16
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Nuclear modification factor for J/ψ production in nucleus-nucleus collisions

Abstract: The STAR Collaboration has offered an eminent nuclear modification factor of J/ψ at high pT and midrapidity produced in Cu-Cu collisions at √sNN=200 GeV. Recalling a prediction, we can understand that the feature of high-pT nuclear modification factor is related to cc produced by 2 → 1 and 2 → 2 partonic processes in deconfined matter, particularly in the prethermal stage and to the recombination of c and c. The nuclear modification factor at high pT is sensitive to the earliest form of deconfined matter that does not have a temperature.

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