Thursday, May 23, 2013

1305.5106 (Wang Hong-Min et al.)

Pseudo-rapidity Distributions of Charged Hadrons in pp and pA Collisions
at the LHC

Wang Hong-Min, Liu Jia-Fu, Hou Zhao-Yu, Sun Xian-Jing
In the framework of Color Glass Condensate, the pseudo-rapidity distributions of charged hadrons in pp and pA collisions at the LHC are studied with the UGD function from the GBW model. With a $\chi^{2}$ analysis of the CMS data in pp collisions at $\sqrt{s}=0.9,~2.36,~7$ TeV, the normalization factor is obtained and the theoretical results are in good agreement with the perimental data. Then, considering the influence of nucleon hard partons distribution on the number of participants in pA collisions by a Glauber Monte Carlo method, we give the predictive results for the multiplicity distributions in p+Pb collisions at $\sqrt{s}=4.4$ TeV.
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