| Hadron Multiplicities in Pb＋Pb Collisions at the Large Hadron Collider and Pomeron Loop Effects |
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| 引用本文： | 向文昌,王胜芹,周代翠.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):76-79. |
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| 作者姓名： | 向文昌 王胜芹 周代翠 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant Nos 10875051 and 10635020 （key project）, the Key Project of the Ministry of Education of China under Grant Nos 306022 and IRT0624, and the National Basic Research Program of China under Grant No 2008CB317106. |
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| 摘 要： | 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.
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| 关 键 词： | 大型强子对撞机 高能强子碰撞 Pomeron 铅 子环 重数 Pb 耦合动力学 |
| 收稿时间： | 2010-1-2 |
Hadron Multiplicities in Pb+Pb Collisions at the Large Hadron Collider and Pomeron Loop Effects |
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| 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].Chinese Physics Letters,2010,27(7):76-79. |
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| Authors: | XIANG Wen-Chang WANG Sheng-Qin ZHOU Dai-Cui |
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| Institution: | Institute of Particle Physics, Huazhong Normal University, Wuhan 430079 Physics Teaching Research Group, Basic Course Teaching Department, Hunan Institute of Technology, Hengyang 421002 Department of Physics, The University of South Dakota, Vermillion, SD 57069, USA |
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| Abstract: | 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. |
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| Keywords: | 25 75 -q 25 75 Nq 12 38 Aw |
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