Net charge fluctuations in Au + Au collisions at √s NN=130 GeV

Jenni R. Adams,Carl G. Adler,Madan M. Aggarwal,Zubayer Ahammed,J. Amonett,Bryon D. Anderson,Michael G. Anderson,Dmitry A. Arkhipkin.,G. S. Averichev,SK K. Badyal,Jan T. Balewski,Olga Barannikova,L. S. Barnby,Jérôme Baudot,Selemon Bekele,V. V. Belaga,René Bellwied,Jens Ph Berger,Betty I. Bezverkhny,Sanjeev Bhardwaj,Partha Bhaskar,Ashok Kumar Bhati,Hans C. Bichsel,Anja E M Billmeier,L. C. Bland,C. O. Blyth,B. E. Bonner,Michiel A J Botje,A. Boucham,A. V. Brandin,Alessandro Bravar,Robert V. Cadman,Xiangzhou Cai,Helen Louise Caines,Manuel Calderón De La Barca Sánchez,A. Cardenas,Jim B. Carroll,Javier Sarmiento Castillo,María J. Castro,Daniel A. Cebra,Petr Chaloupka,Subhasis Chattopadhyay,Hui Chen,Yang Chen,S. P. Chernenko,Michael Gerard Cherney,Alexei A. Chikanian,Bernard Choi,William B. Christie,Jean Pierre Michel Coffin,Thomas Michael Cormier,John G. Cramer,Henry J. Crawford,Debasish Das,Santosh K. Das,A. A. Derevschikov,Lidia A. Didenko,Thomas Dietel,Xin Dong,James E. Draper,Fei Du,Anand Kumar Dubey,V. B. Dunin,James C. Dunlop,Mihir Ranjan Dutta Majumdar,Volker Eckardt,L. G. Efimov,V. V. Emelianov,J. M. Engelage,G. Eppley,Barbara Erazmus,Patricia Fachini,V. Faine,Julien Cl Faivre,Renee D. Fatemi,Kirill V. Filimonov,Petr Filip,L. Evan Finch,Yu V. Fisyak,D. Flierl,K. J. Foley,Jun Fu,Cari A. Gagliardi,Murthy S. Ganti,Thomas D. Gutierrez,Nikolai D. Gagunashvili,J. Gans,Ludovic Gaudichet,Marie Germain,Frank J M Geurts,V. Ghazikhanian,Premomoy S. Ghosh,J. E. González,O. A. Grachov,Vladislav A. Grigoriev,S. Gronstal,David P. Grosnick,M. Guedon, Steven M. Guertin

Physical Review C - Nuclear Physics(2003)

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摘要
We present the results of charged particle fluctuations measurements in Au+Au collisions at √S NN = 130 GeV using the STAR detector. Dynamical fluctuations measurements are presented for inclusive charged particle multiplicities as well as for identified charged pions, kaons, and protons. The net charge dynamical fluctuations are found to be large and negative providing clear evidence that positive and negative charged particle production is correlated within the pseudorapidity range investigated. Correlations are smaller than expected based on model-dependent predictions for a resonance gas or a quark-gluon gas which undergoes fast hadronization and freeze-out. Qualitative agreement is found with comparable scaled p + p measurements and a heavy ion jet interaction generation model calculation based on independent particle collisions, although a small deviation from the 1/N scaling dependence expected from this model is observed.
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