One-, two-, and three-particle distributions from 158A GeV/c central Pb+Pb collisions

M. M. Aggarwal; A. L S Angelis; V. Antonenko; V. Arefiev; V. Astakhov; V. Avdeitchikov; T. C. Awes; P. V K S Baba; S. K. Badyal; S. Bathe; B. Batiounia; T. Bernier; K. B. Bhalla; V. S. Bhatia; C. Blume; D. Bucher; H. Büsching; L. Carlén; S. Chattopadhyay; M. P. Decowski; H. Delagrange; P. Donni; M. R. Dutta Majumdar; K. El Chenawi; K. Enosawa; S. Fokin; V. Frolov; M. S. Ganti; S. Garpman; O. Gavrishchuk; F. J M Geurts; T. K. Ghosh; R. Glasow; B. Guskov; H. Å Gustafsson; H. H. Gutbrod; I. Hrivnacova; M. Ippolitov; H. Kalechofsky; R. Kamermans; K. Karadjev; K. Karpio; B. W. Kolb; I. Kosarev; I. Koutcheryaev; A. Kugler; P. Kulinich; M. Kurata; A. Lebedev; H. Löhner; D. P. Mahapatra; V. Manko; M. Martin; G. Martínez; A. Maximov; Y. Miake; G. C. Mishra; B. Mohanty; M. J. Mora; D. Morrison; T. Mukhanova; D. S. Mukhopadhyay; H. Naef; B. K. Nandi; S. K. Nayak; T. K. Nayak; A. Nianine; V. Nikitine; S. Nikolaev; P. Nilsson; S. Nishimura; P. Nomokonov; J. Nystrand; A. Oskarsson; I. Otterlund; T. Peitzmann; D. Peressounko; V. Petracek; F. Plasil; M. L. Purschke; J. Rak; R. Raniwala; S. Raniwala; N. K. Rao; K. Reygers; G. Roland; L. Rosselet; I. Roufanov; J. M. Rubio; S. S. Sambyal; R. Santo; S. Sato; H. Schlagheck; H. R. Schmidt; Y. Schutz; G. Shabratova; T. H. Shah; I. Sibiriak; T. Siemiarczuk; D. Silvermyr; B. C. Sinha; N. Slavine; K. Söderström; G. Sood; S. P. Sørensen; P. Stankus; G. Stefanek; P. Steinberg; E. Stenlund; M. Sumbera; T. Svensson; A. Tsvetkov; L. Tykarski; E. C V D Pijll; N. V. Eijndhoven; G. J V Nieuwenhuizen; A. Vinogradov; Y. P. Viyogi; A. Vodopianov; S. Vörös; B. Wysłouch; G. R. Young

One-, two-, and three-particle distributions from 158A GeV/c central Pb+Pb collisions

M. M. Aggarwal, A. L S Angelis, V. Antonenko, V. Arefiev, V. Astakhov, V. Avdeitchikov, T. C. Awes, P. V K S Baba, S. K. Badyal, S. Bathe, B. Batiounia, T. Bernier, K. B. Bhalla, V. S. Bhatia, C. Blume, D. Bucher, H. Büsching, L. Carlén, S. Chattopadhyay, M. P. DecowskiH. Delagrange, P. Donni, M. R. Dutta Majumdar, K. El Chenawi, K. Enosawa, S. Fokin, V. Frolov, M. S. Ganti, S. Garpman, O. Gavrishchuk, F. J M Geurts, T. K. Ghosh, R. Glasow, B. Guskov, H. Å Gustafsson, H. H. Gutbrod, I. Hrivnacova, M. Ippolitov, H. Kalechofsky, R. Kamermans, K. Karadjev, K. Karpio, B. W. Kolb, I. Kosarev, I. Koutcheryaev, A. Kugler, P. Kulinich, M. Kurata, A. Lebedev, H. Löhner, D. P. Mahapatra, V. Manko, M. Martin, G. Martínez, A. Maximov, Y. Miake, G. C. Mishra, B. Mohanty, M. J. Mora, D. Morrison, T. Mukhanova, D. S. Mukhopadhyay, H. Naef, B. K. Nandi, S. K. Nayak, T. K. Nayak, A. Nianine, V. Nikitine, S. Nikolaev, P. Nilsson, S. Nishimura, P. Nomokonov, J. Nystrand, A. Oskarsson, I. Otterlund, T. Peitzmann, D. Peressounko, V. Petracek, F. Plasil, M. L. Purschke, J. Rak, R. Raniwala, S. Raniwala, N. K. Rao, K. Reygers, G. Roland, L. Rosselet, I. Roufanov, J. M. Rubio, S. S. Sambyal, R. Santo, S. Sato, H. Schlagheck, H. R. Schmidt, Y. Schutz, G. Shabratova, T. H. Shah, I. Sibiriak, T. Siemiarczuk, D. Silvermyr, B. C. Sinha, N. Slavine, K. Söderström, G. Sood, S. P. Sørensen, P. Stankus, G. Stefanek, P. Steinberg, E. Stenlund, M. Sumbera, T. Svensson, A. Tsvetkov, L. Tykarski, E. C V D Pijll, N. V. Eijndhoven, G. J V Nieuwenhuizen, A. Vinogradov, Y. P. Viyogi, A. Vodopianov, S. Vörös, B. Wysłouch, G. R. Young

Research output: Contribution to journal › Article

30 Scopus citations

Abstract

Several hadronic observables have been studied in central 158A GeV Pb+Pb collisions using data measured by the WA98 experiment at CERN: single π^- and K^- production, as well as two- and three-pion interferometry. The Wiedemann-Heinz hydrodynamical model has been fitted to the pion spectrum, giving an estimate of the temperature and transverse flow velocity. Bose-Einstein correlations between two identified π^- have been analyzed as a function of k_T, using two different parametrizations. The results indicate that the source does not have a strictly boost invariant expansion or spend time in a long-lived intermediate phase. A comparison between data and a hydrodynamical based simulation shows very good agreement for the radii parameters as a function of k_T. The pion phase-space density at freeze-out has been measured, and agrees well with the Tomášik-Heinz model. A large pion chemical potential close to the condensation limit of m_π seems to be excluded. The three-pion Bose-Einstein interferometry shows a substantial contribution of the genuine three-pion correlation, but not quite as large as expected for a fully chaotic and symmetric source.

Original language	English (US)
Article number	014906
Pages (from-to)	149061-1490613
Number of pages	1341553
Journal	Physical Review C - Nuclear Physics
Volume	67
Issue number	1
State	Published - Jan 1 2003

ASJC Scopus subject areas

Nuclear and High Energy Physics

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Aggarwal, M. M., Angelis, A. L. S., Antonenko, V., Arefiev, V., Astakhov, V., Avdeitchikov, V., Awes, T. C., Baba, P. V. K. S., Badyal, S. K., Bathe, S., Batiounia, B., Bernier, T., Bhalla, K. B., Bhatia, V. S., Blume, C., Bucher, D., Büsching, H., Carlén, L., Chattopadhyay, S., ... Young, G. R. (2003). One-, two-, and three-particle distributions from 158A GeV/c central Pb+Pb collisions. Physical Review C - Nuclear Physics, 67(1), 149061-1490613. [014906].

One-, two-, and three-particle distributions from 158A GeV/c central Pb+Pb collisions. / Aggarwal, M. M.; Angelis, A. L S; Antonenko, V.; Arefiev, V.; Astakhov, V.; Avdeitchikov, V.; Awes, T. C.; Baba, P. V K S; Badyal, S. K.; Bathe, S.; Batiounia, B.; Bernier, T.; Bhalla, K. B.; Bhatia, V. S.; Blume, C.; Bucher, D.; Büsching, H.; Carlén, L.; Chattopadhyay, S.; Decowski, M. P.; Delagrange, H.; Donni, P.; Dutta Majumdar, M. R.; El Chenawi, K.; Enosawa, K.; Fokin, S.; Frolov, V.; Ganti, M. S.; Garpman, S.; Gavrishchuk, O.; Geurts, F. J M; Ghosh, T. K.; Glasow, R.; Guskov, B.; Gustafsson, H. Å; Gutbrod, H. H.; Hrivnacova, I.; Ippolitov, M.; Kalechofsky, H.; Kamermans, R.; Karadjev, K.; Karpio, K.; Kolb, B. W.; Kosarev, I.; Koutcheryaev, I.; Kugler, A.; Kulinich, P.; Kurata, M.; Lebedev, A.; Löhner, H.; Mahapatra, D. P.; Manko, V.; Martin, M.; Martínez, G.; Maximov, A.; Miake, Y.; Mishra, G. C.; Mohanty, B.; Mora, M. J.; Morrison, D.; Mukhanova, T.; Mukhopadhyay, D. S.; Naef, H.; Nandi, B. K.; Nayak, S. K.; Nayak, T. K.; Nianine, A.; Nikitine, V.; Nikolaev, S.; Nilsson, P.; Nishimura, S.; Nomokonov, P.; Nystrand, J.; Oskarsson, A.; Otterlund, I.; Peitzmann, T.; Peressounko, D.; Petracek, V.; Plasil, F.; Purschke, M. L.; Rak, J.; Raniwala, R.; Raniwala, S.; Rao, N. K.; Reygers, K.; Roland, G.; Rosselet, L.; Roufanov, I.; Rubio, J. M.; Sambyal, S. S.; Santo, R.; Sato, S.; Schlagheck, H.; Schmidt, H. R.; Schutz, Y.; Shabratova, G.; Shah, T. H.; Sibiriak, I.; Siemiarczuk, T.; Silvermyr, D.; Sinha, B. C.; Slavine, N.; Söderström, K.; Sood, G.; Sørensen, S. P.; Stankus, P.; Stefanek, G.; Steinberg, P.; Stenlund, E.; Sumbera, M.; Svensson, T.; Tsvetkov, A.; Tykarski, L.; Pijll, E. C V D; Eijndhoven, N. V.; Nieuwenhuizen, G. J V; Vinogradov, A.; Viyogi, Y. P.; Vodopianov, A.; Vörös, S.; Wysłouch, B.; Young, G. R.

In: Physical Review C - Nuclear Physics, Vol. 67, No. 1, 014906, 01.01.2003, p. 149061-1490613.

Research output: Contribution to journal › Article

Aggarwal, MM, Angelis, ALS, Antonenko, V, Arefiev, V, Astakhov, V, Avdeitchikov, V, Awes, TC, Baba, PVKS, Badyal, SK, Bathe, S, Batiounia, B, Bernier, T, Bhalla, KB, Bhatia, VS, Blume, C, Bucher, D, Büsching, H, Carlén, L, Chattopadhyay, S, Decowski, MP, Delagrange, H, Donni, P, Dutta Majumdar, MR, El Chenawi, K, Enosawa, K, Fokin, S, Frolov, V, Ganti, MS, Garpman, S, Gavrishchuk, O, Geurts, FJM, Ghosh, TK, Glasow, R, Guskov, B, Gustafsson, HÅ, Gutbrod, HH, Hrivnacova, I, Ippolitov, M, Kalechofsky, H, Kamermans, R, Karadjev, K, Karpio, K, Kolb, BW, Kosarev, I, Koutcheryaev, I, Kugler, A, Kulinich, P, Kurata, M, Lebedev, A, Löhner, H, Mahapatra, DP, Manko, V, Martin, M, Martínez, G, Maximov, A, Miake, Y, Mishra, GC, Mohanty, B, Mora, MJ, Morrison, D, Mukhanova, T, Mukhopadhyay, DS, Naef, H, Nandi, BK, Nayak, SK, Nayak, TK, Nianine, A, Nikitine, V, Nikolaev, S, Nilsson, P, Nishimura, S, Nomokonov, P, Nystrand, J, Oskarsson, A, Otterlund, I, Peitzmann, T, Peressounko, D, Petracek, V, Plasil, F, Purschke, ML, Rak, J, Raniwala, R, Raniwala, S, Rao, NK, Reygers, K, Roland, G, Rosselet, L, Roufanov, I, Rubio, JM, Sambyal, SS, Santo, R, Sato, S, Schlagheck, H, Schmidt, HR, Schutz, Y, Shabratova, G, Shah, TH, Sibiriak, I, Siemiarczuk, T, Silvermyr, D, Sinha, BC, Slavine, N, Söderström, K, Sood, G, Sørensen, SP, Stankus, P, Stefanek, G, Steinberg, P, Stenlund, E, Sumbera, M, Svensson, T, Tsvetkov, A, Tykarski, L, Pijll, ECVD, Eijndhoven, NV, Nieuwenhuizen, GJV, Vinogradov, A, Viyogi, YP, Vodopianov, A, Vörös, S, Wysłouch, B & Young, GR 2003, 'One-, two-, and three-particle distributions from 158A GeV/c central Pb+Pb collisions', Physical Review C - Nuclear Physics, vol. 67, no. 1, 014906, pp. 149061-1490613.

Aggarwal, M. M. ; Angelis, A. L S ; Antonenko, V. ; Arefiev, V. ; Astakhov, V. ; Avdeitchikov, V. ; Awes, T. C. ; Baba, P. V K S ; Badyal, S. K. ; Bathe, S. ; Batiounia, B. ; Bernier, T. ; Bhalla, K. B. ; Bhatia, V. S. ; Blume, C. ; Bucher, D. ; Büsching, H. ; Carlén, L. ; Chattopadhyay, S. ; Decowski, M. P. ; Delagrange, H. ; Donni, P. ; Dutta Majumdar, M. R. ; El Chenawi, K. ; Enosawa, K. ; Fokin, S. ; Frolov, V. ; Ganti, M. S. ; Garpman, S. ; Gavrishchuk, O. ; Geurts, F. J M ; Ghosh, T. K. ; Glasow, R. ; Guskov, B. ; Gustafsson, H. Å ; Gutbrod, H. H. ; Hrivnacova, I. ; Ippolitov, M. ; Kalechofsky, H. ; Kamermans, R. ; Karadjev, K. ; Karpio, K. ; Kolb, B. W. ; Kosarev, I. ; Koutcheryaev, I. ; Kugler, A. ; Kulinich, P. ; Kurata, M. ; Lebedev, A. ; Löhner, H. ; Mahapatra, D. P. ; Manko, V. ; Martin, M. ; Martínez, G. ; Maximov, A. ; Miake, Y. ; Mishra, G. C. ; Mohanty, B. ; Mora, M. J. ; Morrison, D. ; Mukhanova, T. ; Mukhopadhyay, D. S. ; Naef, H. ; Nandi, B. K. ; Nayak, S. K. ; Nayak, T. K. ; Nianine, A. ; Nikitine, V. ; Nikolaev, S. ; Nilsson, P. ; Nishimura, S. ; Nomokonov, P. ; Nystrand, J. ; Oskarsson, A. ; Otterlund, I. ; Peitzmann, T. ; Peressounko, D. ; Petracek, V. ; Plasil, F. ; Purschke, M. L. ; Rak, J. ; Raniwala, R. ; Raniwala, S. ; Rao, N. K. ; Reygers, K. ; Roland, G. ; Rosselet, L. ; Roufanov, I. ; Rubio, J. M. ; Sambyal, S. S. ; Santo, R. ; Sato, S. ; Schlagheck, H. ; Schmidt, H. R. ; Schutz, Y. ; Shabratova, G. ; Shah, T. H. ; Sibiriak, I. ; Siemiarczuk, T. ; Silvermyr, D. ; Sinha, B. C. ; Slavine, N. ; Söderström, K. ; Sood, G. ; Sørensen, S. P. ; Stankus, P. ; Stefanek, G. ; Steinberg, P. ; Stenlund, E. ; Sumbera, M. ; Svensson, T. ; Tsvetkov, A. ; Tykarski, L. ; Pijll, E. C V D ; Eijndhoven, N. V. ; Nieuwenhuizen, G. J V ; Vinogradov, A. ; Viyogi, Y. P. ; Vodopianov, A. ; Vörös, S. ; Wysłouch, B. ; Young, G. R. / One-, two-, and three-particle distributions from 158A GeV/c central Pb+Pb collisions. In: Physical Review C - Nuclear Physics. 2003 ; Vol. 67, No. 1. pp. 149061-1490613.

@article{6318bc781e4a402fabcfd4595091e39f,

title = "One-, two-, and three-particle distributions from 158A GeV/c central Pb+Pb collisions",

abstract = "Several hadronic observables have been studied in central 158A GeV Pb+Pb collisions using data measured by the WA98 experiment at CERN: single π- and K- production, as well as two- and three-pion interferometry. The Wiedemann-Heinz hydrodynamical model has been fitted to the pion spectrum, giving an estimate of the temperature and transverse flow velocity. Bose-Einstein correlations between two identified π- have been analyzed as a function of kT, using two different parametrizations. The results indicate that the source does not have a strictly boost invariant expansion or spend time in a long-lived intermediate phase. A comparison between data and a hydrodynamical based simulation shows very good agreement for the radii parameters as a function of kT. The pion phase-space density at freeze-out has been measured, and agrees well with the Tom{\'a}{\v s}ik-Heinz model. A large pion chemical potential close to the condensation limit of mπ seems to be excluded. The three-pion Bose-Einstein interferometry shows a substantial contribution of the genuine three-pion correlation, but not quite as large as expected for a fully chaotic and symmetric source.",

author = "Aggarwal, {M. M.} and Angelis, {A. L S} and V. Antonenko and V. Arefiev and V. Astakhov and V. Avdeitchikov and Awes, {T. C.} and Baba, {P. V K S} and Badyal, {S. K.} and S. Bathe and B. Batiounia and T. Bernier and Bhalla, {K. B.} and Bhatia, {V. S.} and C. Blume and D. Bucher and H. B{\"u}sching and L. Carl{\'e}n and S. Chattopadhyay and Decowski, {M. P.} and H. Delagrange and P. Donni and {Dutta Majumdar}, {M. R.} and {El Chenawi}, K. and K. Enosawa and S. Fokin and V. Frolov and Ganti, {M. S.} and S. Garpman and O. Gavrishchuk and Geurts, {F. J M} and Ghosh, {T. K.} and R. Glasow and B. Guskov and Gustafsson, {H. {\AA}} and Gutbrod, {H. H.} and I. Hrivnacova and M. Ippolitov and H. Kalechofsky and R. Kamermans and K. Karadjev and K. Karpio and Kolb, {B. W.} and I. Kosarev and I. Koutcheryaev and A. Kugler and P. Kulinich and M. Kurata and A. Lebedev and H. L{\"o}hner and Mahapatra, {D. P.} and V. Manko and M. Martin and G. Mart{\'i}nez and A. Maximov and Y. Miake and Mishra, {G. C.} and B. Mohanty and Mora, {M. J.} and D. Morrison and T. Mukhanova and Mukhopadhyay, {D. S.} and H. Naef and Nandi, {B. K.} and Nayak, {S. K.} and Nayak, {T. K.} and A. Nianine and V. Nikitine and S. Nikolaev and P. Nilsson and S. Nishimura and P. Nomokonov and J. Nystrand and A. Oskarsson and I. Otterlund and T. Peitzmann and D. Peressounko and V. Petracek and F. Plasil and Purschke, {M. L.} and J. Rak and R. Raniwala and S. Raniwala and Rao, {N. K.} and K. Reygers and G. Roland and L. Rosselet and I. Roufanov and Rubio, {J. M.} and Sambyal, {S. S.} and R. Santo and S. Sato and H. Schlagheck and Schmidt, {H. R.} and Y. Schutz and G. Shabratova and Shah, {T. H.} and I. Sibiriak and T. Siemiarczuk and D. Silvermyr and Sinha, {B. C.} and N. Slavine and K. S{\"o}derstr{\"o}m and G. Sood and S{\o}rensen, {S. P.} and P. Stankus and G. Stefanek and P. Steinberg and E. Stenlund and M. Sumbera and T. Svensson and A. Tsvetkov and L. Tykarski and Pijll, {E. C V D} and Eijndhoven, {N. V.} and Nieuwenhuizen, {G. J V} and A. Vinogradov and Viyogi, {Y. P.} and A. Vodopianov and S. V{\"o}r{\"o}s and B. Wys{\l}ouch and Young, {G. R.}",

year = "2003",

month = jan,

day = "1",

language = "English (US)",

volume = "67",

pages = "149061--1490613",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

publisher = "American Physical Society",

number = "1",

}

TY - JOUR

T1 - One-, two-, and three-particle distributions from 158A GeV/c central Pb+Pb collisions

AU - Aggarwal, M. M.

AU - Angelis, A. L S

AU - Antonenko, V.

AU - Arefiev, V.

AU - Astakhov, V.

AU - Avdeitchikov, V.

AU - Awes, T. C.

AU - Baba, P. V K S

AU - Badyal, S. K.

AU - Bathe, S.

AU - Batiounia, B.

AU - Bernier, T.

AU - Bhalla, K. B.

AU - Bhatia, V. S.

AU - Blume, C.

AU - Bucher, D.

AU - Büsching, H.

AU - Carlén, L.

AU - Chattopadhyay, S.

AU - Decowski, M. P.

AU - Delagrange, H.

AU - Donni, P.

AU - Dutta Majumdar, M. R.

AU - El Chenawi, K.

AU - Enosawa, K.

AU - Fokin, S.

AU - Frolov, V.

AU - Ganti, M. S.

AU - Garpman, S.

AU - Gavrishchuk, O.

AU - Geurts, F. J M

AU - Ghosh, T. K.

AU - Glasow, R.

AU - Guskov, B.

AU - Gustafsson, H. Å

AU - Gutbrod, H. H.

AU - Hrivnacova, I.

AU - Ippolitov, M.

AU - Kalechofsky, H.

AU - Kamermans, R.

AU - Karadjev, K.

AU - Karpio, K.

AU - Kolb, B. W.

AU - Kosarev, I.

AU - Koutcheryaev, I.

AU - Kugler, A.

AU - Kulinich, P.

AU - Kurata, M.

AU - Lebedev, A.

AU - Löhner, H.

AU - Mahapatra, D. P.

AU - Manko, V.

AU - Martin, M.

AU - Martínez, G.

AU - Maximov, A.

AU - Miake, Y.

AU - Mishra, G. C.

AU - Mohanty, B.

AU - Mora, M. J.

AU - Morrison, D.

AU - Mukhanova, T.

AU - Mukhopadhyay, D. S.

AU - Naef, H.

AU - Nandi, B. K.

AU - Nayak, S. K.

AU - Nayak, T. K.

AU - Nianine, A.

AU - Nikitine, V.

AU - Nikolaev, S.

AU - Nilsson, P.

AU - Nishimura, S.

AU - Nomokonov, P.

AU - Nystrand, J.

AU - Oskarsson, A.

AU - Otterlund, I.

AU - Peitzmann, T.

AU - Peressounko, D.

AU - Petracek, V.

AU - Plasil, F.

AU - Purschke, M. L.

AU - Rak, J.

AU - Raniwala, R.

AU - Raniwala, S.

AU - Rao, N. K.

AU - Reygers, K.

AU - Roland, G.

AU - Rosselet, L.

AU - Roufanov, I.

AU - Rubio, J. M.

AU - Sambyal, S. S.

AU - Santo, R.

AU - Sato, S.

AU - Schlagheck, H.

AU - Schmidt, H. R.

AU - Schutz, Y.

AU - Shabratova, G.

AU - Shah, T. H.

AU - Sibiriak, I.

AU - Siemiarczuk, T.

AU - Silvermyr, D.

AU - Sinha, B. C.

AU - Slavine, N.

AU - Söderström, K.

AU - Sood, G.

AU - Sørensen, S. P.

AU - Stankus, P.

AU - Stefanek, G.

AU - Steinberg, P.

AU - Stenlund, E.

AU - Sumbera, M.

AU - Svensson, T.

AU - Tsvetkov, A.

AU - Tykarski, L.

AU - Pijll, E. C V D

AU - Eijndhoven, N. V.

AU - Nieuwenhuizen, G. J V

AU - Vinogradov, A.

AU - Viyogi, Y. P.

AU - Vodopianov, A.

AU - Vörös, S.

AU - Wysłouch, B.

AU - Young, G. R.

PY - 2003/1/1

Y1 - 2003/1/1

N2 - Several hadronic observables have been studied in central 158A GeV Pb+Pb collisions using data measured by the WA98 experiment at CERN: single π- and K- production, as well as two- and three-pion interferometry. The Wiedemann-Heinz hydrodynamical model has been fitted to the pion spectrum, giving an estimate of the temperature and transverse flow velocity. Bose-Einstein correlations between two identified π- have been analyzed as a function of kT, using two different parametrizations. The results indicate that the source does not have a strictly boost invariant expansion or spend time in a long-lived intermediate phase. A comparison between data and a hydrodynamical based simulation shows very good agreement for the radii parameters as a function of kT. The pion phase-space density at freeze-out has been measured, and agrees well with the Tomášik-Heinz model. A large pion chemical potential close to the condensation limit of mπ seems to be excluded. The three-pion Bose-Einstein interferometry shows a substantial contribution of the genuine three-pion correlation, but not quite as large as expected for a fully chaotic and symmetric source.

AB - Several hadronic observables have been studied in central 158A GeV Pb+Pb collisions using data measured by the WA98 experiment at CERN: single π- and K- production, as well as two- and three-pion interferometry. The Wiedemann-Heinz hydrodynamical model has been fitted to the pion spectrum, giving an estimate of the temperature and transverse flow velocity. Bose-Einstein correlations between two identified π- have been analyzed as a function of kT, using two different parametrizations. The results indicate that the source does not have a strictly boost invariant expansion or spend time in a long-lived intermediate phase. A comparison between data and a hydrodynamical based simulation shows very good agreement for the radii parameters as a function of kT. The pion phase-space density at freeze-out has been measured, and agrees well with the Tomášik-Heinz model. A large pion chemical potential close to the condensation limit of mπ seems to be excluded. The three-pion Bose-Einstein interferometry shows a substantial contribution of the genuine three-pion correlation, but not quite as large as expected for a fully chaotic and symmetric source.

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UR - http://www.scopus.com/inward/citedby.url?scp=0037242764&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0037242764

VL - 67

SP - 149061

EP - 1490613

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

SN - 0556-2813

IS - 1

M1 - 014906

ER -