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
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))
