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Phys. Rev. D 71, 012002 (2005) [5 pages]

Charge fluctuations in π+p and K+p collisions at 250  GeV/c

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M. R. Atayan1, Bai Yuting2, E. A. De Wolf3, A. M. F. Endler4, Fu Jinghua2, H. Gulkanyan1, R. Hakobyan1, W. Kittel5, Liu Lianshou2, Li Zhiming2, Z. V. Metreveli6, L. N. Smirnova7, L. A. Tikhonova7, A. G. Tomaradze6,*, Wu Yuanfang2, and S. A. Zotkin7,† (EHS/NA22 Collaboration)
1Institute of Physics, AM-375036 Yerevan, Armenia
2Institute of Particle Physics, Hua-Zhong Normal University, Wuhan 430070, China
3Department of Physics, Universitaire Instelling Antwerpen, B-2610 Wilrijk, Belgium
4Centro Brasileiro de Pesquisas Fisicas, BR-22290 Rio de Janeiro, Brazil
5High Energy Physics Institute (HEFIN), University of Nijmegen/NIKHEF, NL-6525 ED Nijmegen, The Netherlands
6Institute for High Energy Physics of Tbilisi State University, GE-380086 Tbilisi, Georgia; , USA
7Scobeltsyn Institute of Nuclear Physics, Lomonosow Moscow State University, RU-119899 Moscow, Russia

Received 5 January 2004; revised 14 May 2004; published 24 January 2005

We report on measurements of event-by-event charge fluctuations in π+p and K+p collisions at 250  GeV/c. The dependence of these fluctuations on the size of the rapidity windows are presented for the first time in the full phase-space domain. The corrections for the influence of global charge conservation and leading-particle stopping are tested by the data. The discrepancy due to incomplete correction given by STAR and PHENIX are estimated. The dependence of the fluctuations on the position of the rapidity bin and on the multiplicity at different rapidity windows are also presented.

© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevD.71.012002
DOI:
10.1103/PhysRevD.71.012002
PACS:
13.85.Hd, 25.75.Gz

*Now at Northwestern Univ., Evanston, IL, USA

†Now at DESY, Hamburg, Germany

 
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