Hadron Multiplicities in Pb+Pb Collisions at the Large Hadron Collider and Pomeron Loop Effects

We study the pseudo-rapidity distribution of hadron multiplicities of high energy Pb+Pb collisions by using color glass condensate dynamics at LHC/ALICE in the fixed coupling case. It is found that after including the pomeron loop effects the charged hadron multiplicities at central rapidity are abo...

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Bibliographic Details
Published in:Chinese physics letters 2010-07, Vol.27 (7), p.072502-072502
Main Authors: Xiang, Wen-Chang, Wang, Sheng-Qin, Zhou, Dai-Cui
Format: Article
Language:English
Subjects:
Charging
Collisions
Color
Dynamic tests
Hadrons
Mathematical analysis
Pomerons
Saturation
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Summary:We study the pseudo-rapidity distribution of hadron multiplicities of high energy Pb+Pb collisions by using color glass condensate dynamics at LHC/ALICE in the fixed coupling case. It is found that after including the pomeron loop effects the charged hadron multiplicities at central rapidity are about 1500 for central Pb+Pb collisions, which are significantly smaller than the saturation based calculations, ~ 1700 [divide] 2500 and compatible with that based on a study of multiplicities in the fragmentation region.
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/27/7/072502