主页 > Pion Freeze-Out Time in Pb+Pb Collisions at 158 A GeV/c Studied via pi-/pi+ and K-/K+ Ratios |
Article | |
Report number | nucl-ex/0607018 |
Title | Pion Freeze-Out Time in Pb+Pb Collisions at 158 A GeV/c Studied via pi-/pi+ and K-/K+ Ratios |
Related title | Pion Freeze-Out Time in Pb+Pb Collisions at 158 A GeV/c Studied via pi-/pi+ and K-/K+ Ratios |
Author(s) |
Aggarwal, M.M. (Panjab 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.) ; Bathe, S. (Munster U., ITP) ; Batiounia, B. (Dubna, JINR) ; Bernier, T. (SUBATECH, Nantes) ; Bhalla, K.B. (Rajasthan U.) ; Bhatia, V.S. (Panjab U.) ; Blume, C. (Munster U., ITP) ; Bucher, D. (Munster U., ITP) ; Busching, H. (Munster U., ITP) ; Carlen, L. (Lund U.) ; Chattopadhyay, S. (Calcutta, VECC) ; Decowski, M.P. (MIT) ; Delagrange, H. (SUBATECH, Nantes) ; Donni, P. (Geneva U.) ; Dutta Majumdar, M.R. (Calcutta, VECC) ; El Chenawi, K. (Lund U.) ; Dubey, A.K. (Bhubaneswar, Inst. Phys.) ; Enosawa, K. (Tsukuba 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, KVI) ; Glasow, R. (Munster U., ITP) ; Guskov, B. (Dubna, JINR) ; Gustafsson, H.A. (Lund U.) ; Gutbrod, H.H. (Darmstadt, GSI) ; Hrivnacova, I. (Rez, Nucl. Phys. Inst.) ; Ippolitov, M. (Kurchatov Inst., Moscow) ; Kalechofsky, H. (Geneva U.) ; Kamermans, R. (Utrecht U.) ; Karadjev, K. (Kurchatov Inst., Moscow) ; Karpio, K. (Warsaw, Inst. Nucl. Studies) ; Kolb, B.W. (Darmstadt, GSI) ; Kosarev, I. (Dubna, JINR) ; Koutcheryaev, I. (Kurchatov Inst., Moscow) ; Kugler, A. (Rez, Nucl. Phys. Inst.) ; Kulinich, P. (MIT) ; Kurata, M. (Tsukuba U.) ; Lebedev, A. (Kurchatov Inst., Moscow) ; Lohner, H. (Groningen, KVI) ; 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) ; Miake, Y. (Tsukuba U.) ; Mishra, G.C. (Bhubaneswar, Inst. Phys.) ; Mohanty, B. (Bhubaneswar, Inst. Phys.) ; Mora, M.J. (SUBATECH, Nantes) ; Morrison, D. (Tennessee U.) ; Mukhanova, T. (Kurchatov Inst., Moscow) ; Mukhopadhyay, D.S. (Calcutta, VECC) ; Naef, H. (Geneva U.) ; Nandi, B.K. (Bhubaneswar, Inst. Phys.) ; Nayak, S.K. (SUBATECH, Nantes) ; Nayak, T.K. (Calcutta, VECC) ; Nianine, A. (Kurchatov Inst., Moscow) ; Nikitine, V. (Dubna, JINR) ; Nikolaev, S. (Kurchatov Inst., Moscow) ; Nilsson, P. (Lund U.) ; Nishimura, S. (Tsukuba U.) ; Nomokonov, P. (Dubna, JINR) ; Nystrand, J. (Lund U.) ; Oskarsson, A. (Lund U.) ; Otterlund, I. (Lund U.) ; Pavliouk, S. (Dubna, JINR) ; Peitzmann, T. (Utrecht U.) ; Peressounko, D. (Kurchatov Inst., Moscow) ; Petracek, V. (Rez, Nucl. Phys. Inst.) ; Phatak, S.C. (Bhubaneswar, Inst. Phys.) ; Pinganaud, W. (SUBATECH, Nantes) ; Plasil, F. (Oak Ridge) ; Purschke, M.L. (Darmstadt, GSI) ; Rak, J. (Rez, Nucl. Phys. Inst.) ; Raniwala, R. (Rajasthan U.) ; Raniwala, S. (Rajasthan U.) ; Rao, N.K. (Jammu U.) ; Retiere, F. (SUBATECH, Nantes) ; Reygers, K. (Munster U., ITP) ; Roland, G. (MIT) ; Rosselet, L. (Geneva U.) ; Roufanov, I. (Dubna, JINR) ; Roy, C. (SUBATECH, Nantes) ; Rubio, J.M. (Geneva U.) ; Sambyal, S.S. (Jammu U.) ; Santo, R. (Munster U., ITP) ; Sato, S. (Tsukuba U.) ; Schlagheck, H. (Munster U., ITP) ; 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.) ; Sood, G. (Panjab U.) ; Sorensen, S.P. (Tennessee U.) ; Stankus, P. (Oak Ridge) ; Stefanek, G. (Warsaw, Inst. Nucl. Studies) ; Steinberg, P. (MIT) ; Stenlund, E. (Lund U.) ; Sumbera, M. (Rez, Nucl. Phys. Inst.) ; Svensson, T. (Lund U.) ; Tsvetkov, A. (Kurchatov Inst., Moscow) ; Tykarski, L. (Warsaw, Inst. Nucl. Studies) ; van de Pijll, E.C. (Utrecht U.) ; van Eijndhoven, N. (Utrecht U.) ; van 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) ; Young, G.R. (Oak Ridge) |
Publication | 2006 |
Imprint | 16 Jul 2006 |
Number of pages | 9 |
Note | Comments: 9 pages, 12 figures 9 pages, 12 figures |
In: | Eur. Phys. J. C 48 (2006) 343-352 |
DOI | 10.1140/epjc/s10052-006-0081-x |
Subject category | Nuclear Physics - Experiment |
Accelerator/Facility, Experiment | CERN SPS ; WA98 |
Abstract | The effect of the final state Coulomb interaction on particles produced in Pb+Pb collisions at 158 A GeV/c has been investigated in the WA98 experiment through the study of the pi-/pi+ and K-/K+ ratios measured as a function of transverse mass. While the ratio for kaons shows no significant transverse mass dependence, the pi-/pi+ ratio is enhanced at small transverse mass values with an enhancement that increases with centrality. A silicon pad detector located near the target is used to estimate the contribution of hyperon decays to the pi-/pi+ ratio. The comparison of results with predictions of the RQMD model in which the Coulomb interaction has been incorporated allows to place constraints on the time of the pion freeze-out. |