12-18 August 2012
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Theoretical Predictions for Nuclear Effects in the Asymmetric Collisions of the LHC at 4.4 ATeV

16 Aug 2012, 16:00
Regency 1/3 and Ambassador ()

Regency 1/3 and Ambassador


Gergely Barnafoldi (Hungarian Academy of Sciences (HU))


Asymmetric high-energy proton-nucleus collision can give unique test of the high-energy nuclear effects. This case nuclear modification and rapidity asymmetry can be describe in parallel [1]. Moreover, measurements might enable us to separate or at least understand better the the mechanisms of the final and initial state nuclear effects in nucleus-nucleus collisions. Predictions for nuclear effects in proton-nucleus (pA or dA) are presented here in wide rapidity ranges (both forward and backward directions) at 200 AGeV RHIC and 4.4 ATeV LHC energies similarly as in Ref[2] for midrapidity. We used a collinear factorized perturbative QCD-improved parton model [3] calculations, including various types of nuclear shadowing parameterizations and models for multiple scattering. We determined the nuclear modification factor, R_{pPb}(p_T) and rapidity asymmetry, Y_{asym}(p_T) and their uncertainties. The scaling behavior of these effect and separation method is also presented. [1] A Adeluyi et al. Phys.Rev. C80 (2009) 014903 [2] G.G. Barnaföldi et al Phys.Rev. C85 (2012) 024903 [3] Y. Zhang et al. Phys.Rev. C65 (2002) 034903

Primary author

Gergely Barnafoldi (Hungarian Academy of Sciences (HU))


Prof. Gabor Papp (Eötvös University) Miklos Gyulassy (Columbia University) Peter Levai (Hungarian Academy of Sciences (HU))

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