Centrality dependence of charged-neutral particle fluctuations in 158A (GeVPb)-Pb-208+Pb-208 collisions

Summary, in English

Results on the study of localized fluctuations in the multiplicity of charged particles and photons produced in 158A GeV/c Pb+Pb collisions are presented for varying centralities. The charged versus neutral particle multiplicity correlations in common phase space regions of varying azimuthal sizes are analyzed by two different methods. Various types of mixed events are constructed to probe fluctuations arising from different sources. The measured results are compared to those from simulations and from mixed events. The comparison indicates the presence of nonstatistical fluctuations in both the charged particle and photon multiplicities in limited azimuthal regions. However, no correlated charged-neutral fluctuations, a possible signature of formation of disoriented chiral condensates, are observed. An upper limit on the production of disoriented chiral condensates is set.

• Author: MM Aggarwal; Z Ahammed; ALS Angelis; V Antonenko; V Arefiev; V Astakhov; V Avdeitchikov; TC Awes; PVKS Baba; SK Badyal; S Bathe; B Batiounia; T Bernier; KB Bhalla; VS Bhatia; C Blume; D Bucher; H Busching; Lars Carlén; S Chattopadhyay; MP Decowski; H Delagrange; P Donni; MRD Majumdar; K El Chenawi; AK Dubey; K Enosawa; S Fokin; V Frolov; MS Ganti; Sten Garpman; O Gavrishchuk; FJM Geurts; TK Ghosh; R Glasow; B Guskov; Hans-Åke Gustafsson; HH Gutbrod; I Hrivnacova; M Ippolitov; H Kalechofsky; K Karadjev; K Karpio; BW Kolb; I Kosarev; I Koutcheryaev; A Kugler; P Kulinich; M Kurata; A Lebedev; H Lohner; L Luquin; DP Mahapatra; V Manko; M Martin; G Martinez; A Maximov; Y Miake; GC Mishra; B Mohanty; MJ Mora; D Morrison; T Mukhanova; DS Mukhopadhyay; H Naef; BK Nandi; SK Nayak; TK Nayak; A Nianine; V Nikitine; S Nikolaev; Pål Nilsson; S Nishimura; P Nomokonov; J Nystrand; A Oskarsson; I Otterlund; T Peitzmann; D Peressounko; V Petracek; W Pinganaud; F Plasil; ML Purschke; J Rak; R Raniwala; S Raniwala; NK Rao; F Retiere; K Reygers; G Roland; L Rosselet; I Roufanov; C Roy; JM Rubio; SS Sambyal; R Santo; S Sato; H Schlagheck; HR Schmidt; Y Schutz; G Shabratova; TH Shah; I Sibiriak; T Siemiarczuk; D Silvermyr; BC Sinha; N Slavine; K Soderstrom; G Sood; SP Sorensen; P Stankus; G Stefanek; P Steinberg; E Stenlund; M Sumbera; T Svensson; A Tsvetkov; L Tykarski; EC von der Pijll; N von Eijndhoven; GJ von Nieuwenhuizen; A Vinogradov; YP Viyogi; A Vodopianov; S Voros; B Wyslouch; GR Young
• Department/s: Nuclear physics; Department of Physics; Particle and nuclear physics
• Publishing year: 2003
• Language: English
• Publication/Series: Physical Review C (Nuclear Physics)
• Volume: 67
• Issue: 4
• Links: http://dx.doi.org/10.1103/PhysRevC.67.044901
• Document type: Journal article
• Publisher: American Physical Society
• Topic: Subatomic Physics
• Status: Published
• ISBN/ISSN/Other: ISSN: 0556-2813