J/ψ-N center of mass energy dependence of nuclear absorption effect on J/ψ production

  • In this paper, the J/ψ nuclear absorption effect is studied at RHIC and LHC energies with the EKS98 shadowing parameterizations. By assuming that the J/ψ absorption cross section, σabs, increases with the charmonium-nucleon (J/ψ-N) center of mass energy, √sJ/ψ N, it is found that σabs should depend on xF (or y) at a certain center of mass energy per nucleon pair, √s, especially at LHC energies. The theoretical results with the xF (or y)-dependence of the absorption effect are in good agreement with the experiment data from PHENIX in d-Au collisions and the predicted results will be examined by the forthcoming experimental data from LHC in d-Pb collisions. Finally, we also present baseline calculations of cold nuclear matter effects on J/ψ production in nucleus-nucleus (A-A) collisions and find that the xF (or y)-dependence of absorption effect is very small at both RHIC and LHC energies in A-A collisions.

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  • [1] . Adare A, Afanasiev S, Aidala C et al. Phys. Rev. Lett.,2007, 98: 2323012. YAN L, ZHUANG P F, XU N. Phys. Rev. Lett., 2006, 97:232301; Andronic A, Braun M P, Redlich K et al. Nucl.Phys. A, 2007, 789: 334-356; Capella A, Bravina L, Ferreiro E G et al. hep-ph/0712.43313. WANG H M, HOU Z Y, SUN X J. Chin. Phys. C (HEP NP), 2008, 32(11): 892-8964. Hirai M, Kumano S, Miyama M. Phys. Rev. D, 2001, 64:034003; Hirai M, Kumano S, Nagai T H. Phys. Rev. C,2004, 70: 0449055. DUAN C G, SONG L H, HUO L J et al. Eur. Phys. J. C,2003, 29: 557-5616. WANG H M, SUN X J, ZHANG B A. Phys. Scr., 2007, 75:651-6557. Eskola K J, Paukkunena H, Salgadoc C A. hepph/0802.01398. Eskola K J, Kolhinen V J, Salgado C A. Eur. Phys. J. C,1999, 9: 61-689. Martin A D, Roberts R G, Stirling W J et al. Eur. Phys.J. C, 2005, 39: 155-16110. Emel'yanov V, Khodinov A, Klein S R et al. Phys. Rev. C,2000, 61: 04490411. Armesto N, Braun M A, Capella A, Pajares C et al. Nucl.Phys. B, 1998, 509: 357-37712. HE Y B, Hufner J, Kopeliovich B Z. Phys. Lett. B, 2000,477: 93-9813. Bedijdian M, Blaschke D, Bodwin G T et al. hepph/031104814. Beneke M, Rothstein I Z. Phys. Rev. D, 1996, 54: 2005-201615. Vogt R. Phys. Rev. C, 2000, 61: 03520316. Kharzeev D, Levin E M, Nardi M. Nuclear Physics. A,2004, 730: 448-459; Hulthen L, Sagawara M. Handbuchder Physik, 1957, 3917. de Vries H, de Jager C W, de Vries C. Atomic Data and Nuclear Data Tables, 1987, 36: 495-53618. Vogt R. Phys. Rev. C, 2005, 71: 05490219. Kharzeev D, Satz H. Phys. Lett. B, 1993, 334: 389-39620. Adare A, Adler S S, Afanasiev S et al. Phys. Rev. C, 2008,77: 02491221. Ferreiro E G, Fleuret F, Lansberg J P et al. hep-ph/0809.4684
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WANG Hong-Min, HOU Zhao-Yu, LIU Jia-Fu and SUN Xian-Jing. J/ψ-N center of mass energy dependence of nuclear absorption effect on J/ψ production[J]. Chinese Physics C, 2010, 34(1): 22-27. doi: 10.1088/1674-1137/34/1/004
WANG Hong-Min, HOU Zhao-Yu, LIU Jia-Fu and SUN Xian-Jing. J/ψ-N center of mass energy dependence of nuclear absorption effect on J/ψ production[J]. Chinese Physics C, 2010, 34(1): 22-27.  doi: 10.1088/1674-1137/34/1/004 shu
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Received: 2009-02-01
Revised: 2009-03-16
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J/ψ-N center of mass energy dependence of nuclear absorption effect on J/ψ production

    Corresponding author: WANG Hong-Min,

Abstract: 

In this paper, the J/ψ nuclear absorption effect is studied at RHIC and LHC energies with the EKS98 shadowing parameterizations. By assuming that the J/ψ absorption cross section, σabs, increases with the charmonium-nucleon (J/ψ-N) center of mass energy, √sJ/ψ N, it is found that σabs should depend on xF (or y) at a certain center of mass energy per nucleon pair, √s, especially at LHC energies. The theoretical results with the xF (or y)-dependence of the absorption effect are in good agreement with the experiment data from PHENIX in d-Au collisions and the predicted results will be examined by the forthcoming experimental data from LHC in d-Pb collisions. Finally, we also present baseline calculations of cold nuclear matter effects on J/ψ production in nucleus-nucleus (A-A) collisions and find that the xF (or y)-dependence of absorption effect is very small at both RHIC and LHC energies in A-A collisions.

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