Hadron Multiplicities in Pb+Pb Collisions at the Large Hadron Collider and Pomeron Loop Effects
XIANG Wen-Chang1,3, WANG Sheng-Qin2, ZHOU Dai-Cui1
1Institute of Particle Physics, Huazhong Normal University, Wuhan 430079 2Physics Teaching Research Group, Basic Course Teaching Department, Hunan Institute of Technology, Hengyang 421002 3Department of Physics, The University of South Dakota, Vermillion, SD 57069, USA
Hadron Multiplicities in Pb+Pb Collisions at the Large Hadron Collider and Pomeron Loop Effects
XIANG Wen-Chang1,3, WANG Sheng-Qin2, ZHOU Dai-Cui1
1Institute of Particle Physics, Huazhong Normal University, Wuhan 430079 2Physics Teaching Research Group, Basic Course Teaching Department, Hunan Institute of Technology, Hengyang 421002 3Department of Physics, The University of South Dakota, Vermillion, SD 57069, USA
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÷2500 and compatible with that based on a study of multiplicities in the fragmentation region.
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÷2500 and compatible with that based on a study of multiplicities in the fragmentation region.
(Relativistic heavy-ion collisions (collisions induced by light ions studied to calibrate relativistic heavy-ion collisions should be classified under both 25.75.-q and sections 13 or 25 appropriate to the light ions))
(General properties of QCD (dynamics, confinement, etc.))
引用本文:
XIANG Wen-Chang;WANG Sheng-Qin;ZHOU Dai-Cui. Hadron Multiplicities in Pb+Pb Collisions at the Large Hadron Collider and Pomeron Loop Effects[J]. 中国物理快报, 2010, 27(7): 72502-072502.
XIANG Wen-Chang, WANG Sheng-Qin, ZHOU Dai-Cui. Hadron Multiplicities in Pb+Pb Collisions at the Large Hadron Collider and Pomeron Loop Effects. Chin. Phys. Lett., 2010, 27(7): 72502-072502.
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2010, Vol. 27 
