Centrality Dependence of Neutral Pion Production in158AGeVP208b+P208bCollisions

M M Aggarwal,L Luquin,A Lebedev,K Karadjev,T K Nayak,S Neumaier,M Pachr,W Pinanaud,A Baldine,T Krümpel,K B Bhalla,B W Kolb,D Mikhalev,T C Awes,S Vörös,K Kurita,V S Bhatia,K Yagi,L Barabach,D Bucher,A Maximov,R Mehdiyev,C Barlag,S Kees,P Kulinich,H Büsching,H Kalechofsky,S Bathe,C Roy,R Kamermans,K El Chenawi,S K Badyal,H Schlagheck,N Solomey,A Buijs,B Batiounia,C Twenhöfel,R Cherbatchev,H Naef,R Higuchi,R Bock,G R Young,A Parfenov,J Urbahn,R Santo,L Tykarski,R Glasow,G Mgebrichvili,S Garpman,T Bernier,Y P Viyogi,A Claussen,L Rosselet,B Raeven,E Stenlund,K Enosawa,A Nianine,S Pavliouk,E.-M Bohne,D P Mahapatra,D Stüken,G Stefanek,S Nikolaev,Tushar K Ghosh ,S K Gupta,[No Value] Sibiriak ,[No Value] Doubovik ,F.e Obenshain ,G Shabratova,Masahiro Kurata ,J Rak,S Raniwala,Trivedi ,[No Value] Patracek ,N.v Eijndhoven ,T Pietzmann ,H.h Gutbrod ,G Roland,[No Value] Frolov ,N Slavine,B K Nandi,Ganti ,А Куглер ,Susumu Sato ,[No Value] Antonenko ,J Nystrand,A Vodopianov,P W Stankus ,M L Purschke,[No Value] Djordjadze ,M R Dutta Majumdar,S Kato,D Mukhopadhyay ,P Nilsson,R Raniwala,[No Value] Kosarev ,H Löhner,[No Value] Chalyshev ,Z Böröcz ,[No Value] Koutcheryaev ,Gj Von Nieuwenhuizen ,P.v.k.s Baba ,N Nikitine ,А Виноградов ,Yusuke Miyamoto ,H Sako,T Siemiarczuk,S Sambyal ,V.s Ramamurthy ,D P Morrison ,Z Ahammed,[No Value] Arefiev ,[No Value] Roufanov ,A.l.s Angelis ,J M Rubio,A Öskarsson ,H.-Å Gustafsson ,[No Value] Otterlund ,O Gavrishchuk,K.h Kampert ,B.n Gus'kov ,F J M Geurts,P Steinberg,K Karpio,I Hřivnáčová ,Y Miake,A C Das,H Kim ,[No Value] Langbein ,P Dönni ,L Carlén ,Y Yokota,Subhasis Chattopadhyay ,Michel Martin ,C Blume,K Reygers,G C Mishra,N Kuzmin,F Retière ,A Tsvetkov,A Agnihotri,Yy Lee ,P Foka,[No Value] Manko ,B C Sinha,D Silvermyr,S Sörensen ,[No Value] Avdeitchikov ,Bolesław Wysłouch ,[No Value] Myalkovski ,[No Value] Astakhov ,K Söderström,F Plášil ,M.p Decowski ,Tomas Svensson ,S Nishimura,T Chujo,M Ippolitov,P Nomokonov,S.m Eliseev ,S Fokin,N Kameswara Rao ,M Šumbera ,S K Nayak

doi:10.1103/physrevlett.81.4087

Centrality Dependence of Neutral Pion Production in158AGeVP208b+P208bCollisions

M M Aggarwal, L Luquin + Show 162 more

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https://doi.org/10.1103/physrevlett.81.4087

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Journal: Physical Review Letters	Publication Date: Nov 9, 1998
Citations: 58

Affiliation: Kurchatov Institute, Variable Energy Cyclotron Centre, GSI Helmholtz Centre for Heavy Ion Research, Czech Academy of Sciences, Joint Institute for Nuclear Research, University of Münster, University of Rajasthan, Oak Ridge National Laboratory, University of Geneva, University of Tsukuba, Panjab University, Massachusetts Institute of Technology, Utrecht University, Lund University, University of Jammu, Institute of Physics

#Production Of Neutral Pions #WA98 Experiment + Show 8 more

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Abstract

The production of neutral pions in 158AGeV Pb+Pb collisions has been studied in the WA98 experiment at the CERN SPS. Transverse momentum spectra are studied for the range 0.3 GeV/c < mT-m0 < 4.0 GeV/c. The results for central collisions are compared to various models. The centrality dependence of the neutral pion spectral shape and yield is investigated. An invariance of the spectral shape and a simple scaling of the yield with the number of participating nucleons is observed for centralities with greater than about 30 participating nucleons which is most naturally explained by assuming an equilibrated system.

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