Event-by-event charged-neutral fluctuations in Pb plus Pb collisions at 158 A GeV

Summary, in English

Charged particles and photons have been measured in central Pb + Pb collisions at 158 A GeV in a common (eta-phi)-phase space region in the WA98 experiment at the CERN SPS. The measured distributions have been analyzed to quantify the frequency with which phase space regions of varying sizes have either small or large neutral pion fraction. The measured results are compared with VENUS model simulated events and with mixed events. Events with both large and small charged-neutral fluctuations are observed to occur more frequently than expected statistically, as deduced from mixed events, or as predicted by model simulations, with the difference becoming more prominent with decreasing size of the A Delta eta-Delta phi region. (C) 2011 Elsevier B.V. All rights reserved.

• Author: M. M. Aggarwal; Z. Ahammed; A. L. S. Angelis; V. Antonenko; V. Arefiev; V. Astakhov; V. Avdeitchikov; T. C. Awes; P. V. K. S. Baba; S. K. Badyal; S. Bathe; B. Batiounia; T. Bernier; K. B. Bhalla; V. S. Bhatia; C. Blume; D. Bucher; H. Buesching; Lars Carlén; S. Chattopadhyay; M. P. Decowski; H. Delagrange; P. Donni; M. R. Dutta Majumdar; K. El Chenawi; A. K. Dubey; K. Enosawa; S. Fokin; V. Frolov; M. S. Ganti; Sten Garpman; O. Gavrishchuk; F. J. M. Geurts; T. K. Ghosh; R. Glasow; R. Gupta; B. Guskov; Hans-Åke Gustafsson; H. H. Gutbrod; I. Hrivnacova; M. Ippolitov; H. Kalechofsky; R. Kamermans; K. Karadjev; K. Karpios; B. W. Kolb; I. Kosarev; I. Koutcheryaev; A. Kugler; P. Kulinich; M. Kurata; A. Lebedev; H. Liu; H. Lohner; L. Luquin; D. P. Mahapatra; V. Manko; M. Martin; G. Martinez; A. Maximov; Y. Miake; G. C. Mishra; B. Mohanty; M. -J. Mora; D. Morrison; T. Moukhanova; D. S. Mukhopadhyay; H. Naef; B. K. Nandi; S. K. Nayak; T. K. Nayak; A. Nianine; V. Nikitine; S. Nikolaev; P Nilsson; S. Nishimura; P. Nomokonov; Joakim Nystrand; Anders Oskarsson; Ingvar Otterlund; S. Pavliouk; T. Peitzmann; D. Peressounko; V. Petracek; W. Pinanaud; F. Plasil; M. L. Purschke; J. Rak; R. Raniwala; S. Raniwala; N. K. Rao; F. Retiere; K. Reygers; G. Roland; L. Rosselet; I. Roufanov; C. Roy; J. M. Rubio; S. S. Sambyal; R. Santo; S. Sato; H. Schlagheck; H. -R. Schmidt; Y. Schutz; G. Shabratova; T. H. Shah; I. Sibiriak; T. Siemiarczuk; David Silvermyr; B. C. Sinha; N. Slavine; Kaj Söderström; G. Sood; S. P. Sorensen; P. Stankus; G. Stefanek; P. Steinberg; Evert Stenlund; M. Sumbera; T Svensson; A. Tsvetkov; L. Tykarski; E. C. V. D. Pijll; N. V. Eijndhoven; G. J. V. Nieuwenhuizen; A. Vinogradov; Y. P. Viyogi; A. Vodopianov; S. Voeroes; B. Wyslouch; G. R. Young
• Department/s: Department of Physics; Particle and nuclear physics
• Publishing year: 2011
• Language: English
• Pages: 300-305
• Publication/Series: Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics
• Volume: 701
• Issue: 3
• Links: http://dx.doi.org/10.1016/j.physletb.2011.06.003
• Document type: Journal article
• Publisher: Elsevier
• Topic: Subatomic Physics
• Keywords: The WA98 experiment; Photon multiplicity detector; Disoriented chiral; condensate; Silicon pad multiplicity detector; Sliding window method; Charged-neutral fluctuations
• Status: Published
• ISBN/ISSN/Other: ISSN: 0370-2693