Transverse mass distributions of neutral pions from Pb-208-induced reactions at 158 center dot A GeV

Summary, in English

Results on transverse mass spectra of neutral pious measured at central rapidity are presented for impact parameter selected 158-A GeV Pb + Pb-1 and Pb + Nb collisions. The distributions cover the range 0.5 GeV/c(2) less than or equal to MT - Mo less than or equal to 4 GeV/c(2). The change of the spectral shape and the multiplicity with centrality is studied in detail. In going from p+p to semi-peripheral Pb+Pb collisions there is a nuclear enhancement increasing with transverse mass similar to the well known Cronin effect, while for very central collisions this enhancement appears to be weaker than expected.

• Author: MM Aggarwal; 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; 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; R Kamermans; K Karadjev; K Karpio; BW Kolb; I Kosarev; I Koutcheryaev; A Kugler; P Kulinich; M Kurata; A Lebedev; H Lohner; 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; P Nilsson; S Nishimura; P Nomokonov; Joakim Nystrand; Anders Oskarsson; Ingvar Otterlund; T Peitzmann; D Peressounko; V Petracek; F Plasil; ML Purschke; J Rak; R Raniwala; S Raniwala; NK Rao; K Reygers; G Roland; L Rosselet; I Roufanov; 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; Evert Stenlund; M Sumbera; Tomas Svensson; A Tsvetkov; L Tykarski; EC vander Pijll; N von Eijndhoven; GJ von Nieuwenhuizen; A Vinogradov; YP Viyogi; A Vodopianov; S Voros; B Wyslouch; GR Young
• Department/s: Department of Physics; Particle and nuclear physics
• Publishing year: 2002
• Language: English
• Pages: 225-236
• Publication/Series: European Physical Journal C. Particles and Fields
• Volume: 23
• Issue: 2
• Links: http://dx.doi.org/10.1007/s100520100886
• Document type: Journal article
• Publisher: Springer
• Topic: Subatomic Physics
• Status: Published
• ISBN/ISSN/Other: ISSN: 1434-6044