12-18 August 2012
US/Eastern timezone

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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
2h
Regency 1/3 and Ambassador ()

Regency 1/3 and Ambassador

Speaker

Gergely Barnafoldi (Hungarian Academy of Sciences (HU))

Description

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))

Co-authors

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

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