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


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.


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


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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

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