CERN Accelerating science

Article
Report number nucl-ex/9901009 ; IKP-MS-990102 ; IKP-MS-99-01-02
Title Freeze-Out Parameters in Central 158 AGeV $^{208}Pb$ + $^{208}Pb$ Collisions
Related titleFREEZE OUT
Author(s)

Aggarwal, M.M. (Panjab U.) ; Agnihotri, A. (Rajasthan U.) ; Ahammed, Z. (Calcutta, VECC) ; Angelis, A.L.S. (Geneva U.) ; Antonenko, V. (Kurchatov Inst., Moscow) ; Arefiev, V. (Dubna, JINR) ; Astakhov, V. (Dubna, JINR) ; Avdeitchikov, V. (Dubna, JINR) ; Awes, T.C. (Oak Ridge) ; Baba, P.V.K.S. (Jammu U.) ; Badyal, S.K. (Jammu U.) ; Baldine, A. (Dubna, JINR) ; Barabach, L. (Dubna, JINR) ; Barlag, C. (Munster U.) ; Bathe, S. (Munster U.) ; Batiounia, B. (Dubna, JINR) ; Bernier, T. (SUBATECH, Nantes) ; Bhalla, K.B. (Rajasthan U.) ; Bhatia, V.S. (Panjab U.) ; Blume, C. (Munster U.) ; Bock, R. (Darmstadt, GSI) ; Bohne, E.-M. (Munster U.) ; Borocz, Z.K. (Munster U.) ; Bucher, D. (Munster U.) ; Buijs, A. (Utrecht U.) ; Busching, H. (Munster U.) ; Carlen, L. (Lund U.) ; Chalyshev, V. (Dubna, JINR) ; Chattopadhyay, S. (Calcutta, VECC) ; Cherbatchev, R. (Kurchatov Inst., Moscow) ; Chujo, T. (Tsukuba U.) ; Claussen, A. (Munster U.) ; Das, A.C. (Calcutta, VECC) ; Decowski, M.P. (MIT) ; Delagrange, H. (SUBATECH, Nantes) ; Djordjadze, V. (Dubna, JINR) ; Donni, P. (Geneva U.) ; Doubovik, I. (Kurchatov Inst., Moscow) ; Dutt, S. (Jammu U.) ; Dutta Majumdar, M.R. (Calcutta, VECC) ; El Chenawi, K. (Lund U.) ; Eliseev, S. (Rez, Nucl. Phys. Inst.) ; Enosawa, K. (Tsukuba U.) ; Foka, P. (Geneva U.) ; Fokin, S. (Kurchatov Inst., Moscow) ; Frolov, V. (Dubna, JINR) ; Ganti, M.S. (Calcutta, VECC) ; Garpman, S. (Lund U.) ; Gavrishchuk, O. (Dubna, JINR) ; Geurts, F.J.M. (Utrecht U.) ; Ghosh, T.K. (Groningen U.) ; Glasow, R. (Munster U.) ; Gupta, S.K. (Rajasthan U.) ; Guskov, B. (Dubna, JINR) ; Gustafsson, H.A. (Lund U.) ; Gutbrod, H.H. (SUBATECH, Nantes) ; Higuchi, R. (Tsukuba U.) ; Hrivnacova, I. (Rez, Nucl. Phys. Inst.) ; Ippolitov, M. (Kurchatov Inst., Moscow) ; Kalechofsky, H. (Geneva U.) ; Kamermans, R. (Utrecht U.) ; Kampert, K.-H. (Munster U.) ; Karadjev, K. (Kurchatov Inst., Moscow) ; Karpio, K. (Warsaw, Inst. Nucl. Studies) ; Kato, S. (Tsukuba U.) ; Kees, S. (Munster U.) ; Kim, H. (Oak Ridge) ; Kolb, B.W. (Darmstadt, GSI) ; Kosarev, I. (Dubna, JINR) ; Koutcheryaev, I. (Kurchatov Inst., Moscow) ; Krumpel, T. (Munster U.) ; Kugler, A. (Rez, Nucl. Phys. Inst.) ; Kulinich, P. (MIT) ; Kurata, M. (Tsukuba U.) ; Kurita, K. (Tsukuba U.) ; Kuzmin, N. (Dubna, JINR) ; Langbein, I. (Darmstadt, GSI) ; Lebedev, A. (Kurchatov Inst., Moscow) ; Lee, Y.Y. (Darmstadt, GSI) ; Lohner, H. (Groningen U.) ; Luquin, L. (SUBATECH, Nantes) ; Mahapatra, D.P. (Bhubaneswar, Inst. Phys.) ; Manko, V. (Kurchatov Inst., Moscow) ; Martin, M. (Geneva U.) ; Martinez, G. (SUBATECH, Nantes) ; Maximov, A. (Dubna, JINR) ; Mehdiyev, R. (Dubna, JINR) ; Mgebrichvili, G. (Kurchatov Inst., Moscow) ; Miake, Y. (Tsukuba U.) ; Mikhalev, D. (Dubna, JINR) ; Mir, Md.F. (Jammu U.) ; Mishra, G.C. (Bhubaneswar, Inst. Phys.) ; Miyamoto, Y. (Tsukuba U.) ; Morrison, D. (Tennessee U.) ; Mukhopadhyay, D.S. (Calcutta, VECC) ; Myalkovski, V. (Dubna, JINR) ; Naef, H. (Geneva U.) ; Nandi, B.K. (Bhubaneswar, Inst. Phys.) ; Nayak, S.K. (SUBATECH, Nantes) ; Nayak, T.K. (Calcutta, VECC) ; Neumaier, S. (Darmstadt, GSI) ; Nianine, A. (Kurchatov Inst., Moscow) ; Nikitine, V. (Dubna, JINR) ; Nikolaev, S. (Dubna, JINR) ; Nilsson, P. (Lund U.) ; Nishimura, S. (Tsukuba U.) ; Nomokonov, P. (Dubna, JINR) ; Nystrand, J. (Lund U.) ; Obenshain, F.E. (Tennessee U.) ; Oskarsson, A. (Lund U.) ; Otterlund, I. (Lund U.) ; Pachr, M. (Rez, Nucl. Phys. Inst.) ; Parfenov, A. (Dubna, JINR) ; Pavliouk, S. (Dubna, JINR) ; Peitzmann, T. (Munster U.) ; Petracek, V. (Rez, Nucl. Phys. Inst.) ; Plasil, F. (Oak Ridge) ; Pinganaud, W. (SUBATECH, Nantes) ; Purschke, M.L. (Darmstadt, GSI) ; Raeven, B. (Utrecht U.) ; Rak, J. (Rez, Nucl. Phys. Inst.) ; Raniwala, R. (Rajasthan U.) ; Raniwala, S. (Rajasthan U.) ; Ramamurthy, V.S. (Bhubaneswar, Inst. Phys.) ; Rao, N.K. (Jammu U.) ; Retiere, F. (SUBATECH, Nantes) ; Reygers, K. (Munster U.) ; Roland, G. (MIT) ; Rosselet, L. (Geneva U.) ; Roufanov, I. (Dubna, JINR) ; Roy, C. (SUBATECH, Nantes) ; Rubio, J.M. (Geneva U.) ; Sako, H. (Tsukuba U.) ; Sambyal, S.S. (Jammu U.) ; Santo, R. (Munster U.) ; Sato, S. (Tsukuba U.) ; Schlagheck, H. (Munster U.) ; Schmidt, H.-R. (Darmstadt, GSI) ; Schutz, Y. (SUBATECH, Nantes) ; Shabratova, G. (Dubna, JINR) ; Shah, T.H. (Jammu U.) ; Sibiriak, I. (Kurchatov Inst., Moscow) ; Siemiarczuk, T. (Warsaw, Inst. Nucl. Studies) ; Silvermyr, D. (Lund U.) ; Sinha, B.C. (Calcutta, VECC) ; Slavine, N. (Dubna, JINR) ; Soderstrom, K. (Lund U.) ; Solomey, N. (Geneva U.) ; Sorensen, S.P. (Tennessee U.) ; Stankus, P. (Oak Ridge) ; Stefanek, G. (Warsaw, Inst. Nucl. Studies) ; Steinberg, P. (MIT) ; Stenlund, E. (Lund U.) ; Stuken, D. (Munster U.) ; Sumbera, M. (Rez, Nucl. Phys. Inst.) ; Svensson, T. (Lund U.) ; Trivedi, M.D. (Calcutta, VECC) ; Tsvetkov, A. (Kurchatov Inst., Moscow) ; Tykarski, L. (Warsaw, Inst. Nucl. Studies) ; Urbahn, J. (Darmstadt, GSI) ; v.d.Pijll, E.C. (Utrecht U.) ; v.Eijndhoven, N. (Utrecht U.) ; v.Nieuwenhuizen, G.J. (MIT) ; Vinogradov, A. (Kurchatov Inst., Moscow) ; Viyogi, Y.P. (Calcutta, VECC) ; Vodopianov, A. (Dubna, JINR) ; Voros, S. (Geneva U.) ; Wyslouch, B. (MIT) ; Yagi, K. (Tsukuba U.) ; Yokota, Y. (Tsukuba U.) ; Young, G.R. (Oak Ridge)

Publication 1999
Imprint 1 Feb 1999
Number of pages 5
Note 5 pages including 3 figures, small changes due to review process, accepted for publication in Phys.Rev.Lett Report-no: IKP-MS-990102
In: Phys. Rev. Lett. 83 (1999) 926-30
DOI 10.1103/PhysRevLett.83.926
Subject category Nuclear Physics - Experiment
Accelerator/Facility, Experiment CERN SPS ; WA98
Abstract Neutral pion production in central 158AGeV Pb+Pb collisions has been studied in the WA98 experiment at the CERN SPS. The pi0 transverse mass spectrum has been analyzed in terms of a thermal model with hydrodynamic expansion. The high accuracy and large kinematic coverage of the measurement allow to limit previously noted ambiguities in the extracted freeze-out parameters. The results are shown to be sensitive to the shape of the velocity distribution at freeze-out.



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