Boost invariance and multiplicity dependence of the charge balance function in π+p and K+p collisions at √s=22 GeV

被引:9
|
作者
Atayan, M. R.
Bai, Yuting
De Wolf, E. A.
Endler, A. M. F.
Fu, Jinghua
Gulkanyan, H.
Hakobyan, R.
Kittel, W.
Liu, Lianshou
Li, Zhiming
Li, Na
Metreveli, Z. V.
Smirnova, L. N.
Tikhonova, L. A.
Tomaradze, A. G.
Wu, Yuanfang [1 ]
Zotkin, S. A.
机构
[1] Hua Zhong Normal Univ, Inst Particle Phys, Wuhan 430070, Peoples R China
[2] Inst Phys, AM-375036 Yerevan, Armenia
[3] Univ Instelling Antwerp, Dept Phys, B-2610 Antwerp, Belgium
[4] Ctr Brasileiro Pesquisas Fis, BR-22290 Rio De Janeiro, Brazil
[5] Radboud Univ Nijmegen, NIKHEF H, NL-6525 ED Nijmegen, Netherlands
[6] Tbilisi State Univ, Inst High Energy Phys, GE-380086 Tbilisi, Georgia
[7] Moscow MV Lomonosov State Univ, Scobeltsyn Inst Nucl Phys, RU-119899 Moscow, Russia
基金
中国国家自然科学基金;
关键词
balance function; boost-invariance; multiplicity;
D O I
10.1016/j.physletb.2006.04.027
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Boost invariance and multiplicity dependence of the charge balance function are studied in pi(+)p and K(+)p collisions at 250 GeV/c incident beam momentum with full acceptance coverage. Charge balance, as well as charge fluctuations, are found to be boost invariant over the whole rapidity region, but both depend on the size of the rapidity window. It is also found that the balance function becomes narrower with increasing multiplicity, which is consistent with the narrowing of the balance function with increasing centrality and/or system size, as observed in current relativistic heavy ion experiments. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:39 / 42
页数:4
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