Advertisement

Indian Journal of Physics

, Volume 84, Issue 12, pp 1721–1725 | Cite as

Cold nuclear modifications at RHIC and LHC

  • G. G. BarnaföldiEmail author
  • G. Fai
  • P. Lévai
  • B. A. Cole
  • G. Papp
Article

Abstract

We use recent nuclear parton distributions, among them the Hirai — Kumano — Nagai (HKN) and Eskola — Paukkunen — Salgado (EPS08) parameterizations, in our pQCD-improved parton model to calculate the nuclear modification factor, R AA′ (p T ), at RHIC and at the LHC. At RHIC, the deuteron-gold nuclear modification factor for pions, measured at p T ≥ 10 GeV/c in central collisions, appears to deviate more from unity than the model results. The slopes of the calculated R dAu (p T ) are similar to the slopes of the PHENIX pion and photon data. At LHC, without final-state effects we see a small enhancement of R dPb (p T ) in the transverse momentum range 10 GeV/c ≥ p T ≥ 100 GeV/c for most parameterizations. The inclusion of final-state energy loss will reduce the R dPb (p T ) values.

Keywords

EMC Effect-Cronin Effect Non-abelian jet-energy loss purturbative QCD 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    B A Cole, G G Barnaföldi, P Lévai, G Papp and G Fai arXiv:hep-ph/0702101 (2007)Google Scholar
  2. [2]
    G G Barnaföldi et al., Int. J. Mod. Phys. E16 1923 (2007); J. Phys. G30 S1124 (2004)ADSGoogle Scholar
  3. [3]
    X-N Wang and M Gyulassy Phys. Rev. D44 3501 (1991); Comput. Phys. Commun. 83 307 (1994); S J Li and X N Wang Phys. Lett. B527 85 (2002)ADSGoogle Scholar
  4. [4]
    K Eskola, V J Kolhinen and C A Salgado Eur. Phys. J. C9 61 (1999)ADSGoogle Scholar
  5. [5]
    K J Eskola, H Paukkunen and C A Salgado arXiv:0802.0139 (2008)Google Scholar
  6. [6]
    M Hirai et al. Phys. Rev. C70 044905 (2004); ibid D75 094009 (2007)ADSGoogle Scholar
  7. [7]
    I Vitev Phys. Rev. C75 064906 (2007)ADSGoogle Scholar
  8. [8]
    G G Barnaföldi et al., Eur. Phys. J. C49 333 (2007) and references thereinADSCrossRefGoogle Scholar
  9. [9]
    S S Adler et al., [PHENIX] Phys. Rev. Lett. 98 172302 (2007)ADSCrossRefGoogle Scholar
  10. [10]
    D Peressounko et al., [PHENIX] arXiv:nucl-ex/0609037 (2006)Google Scholar
  11. [11]
    T Isobe et al., [PHENIX] J. Phys. G34 S1015 (2007)ADSGoogle Scholar
  12. [12]
    F Arleo JHEP 0707 032 (2007)ADSCrossRefGoogle Scholar
  13. [13]
    L Apanasevich et al., [E706] Phys. Rev. D59 074007 (1999)ADSGoogle Scholar
  14. [14]
    N Arnesto (ed.) et al., J. Phys. G35 054001 (2008)Google Scholar
  15. [15]
    G G Barnaföldi et al., arXiv:0805.0335 (Submitted) J. Phys. G (2008)Google Scholar

Copyright information

© Indian Association for the Cultivation of Science 2010

Authors and Affiliations

  • G. G. Barnaföldi
    • 1
    • 2
    Email author
  • G. Fai
    • 1
  • P. Lévai
    • 2
  • B. A. Cole
    • 3
  • G. Papp
    • 4
  1. 1.Center for Nuclear ResearchKent State UniversityKentUSA
  2. 2.MTA KFKI RMKIResearch Institute for Particle and Nuclear PhysicsBudapestHungary
  3. 3.Nevis LaboratoryColumbia UniversityNew YorkUSA
  4. 4.Department for Theoretical PhysicsEötvös UniversityBudapestHungary

Personalised recommendations