Central Pb+Pb collisions at 158 A GeV/c studied by π-π- interferometry

M. M. Aggarwal, A. Agnihotri, Z. Ahammed, A. L S Angelis, V. Antonenko, V. Arefiev, V. Astakhov, V. Avdeitchikov, T. C. Awes, P. V K S Baba, S. K. Badyal, C. Barlag, S. Bathe, B. Batiounia, T. Bernier, K. B. Bhalla, V. S. Bhatia, C. Blume, R. Bock, E. M. Bohne & 146 others Z. Böröcz, D. Bucher, A. Buijs, H. Büsching, L. Carlen, V. Chalyshev, S. Chattopadhyay, R. Cherbatchev, T. Chujo, A. Claussen, A. C. Das, M. P. Decowski, H. Delagrange, V. Djordjadze, P. Donni, I. Doubovik, S. Dutt, M. R. Dutta Majumdar, K. El Chenawi, S. Eliseev, K. Enosawa, P. Foka, S. Fokin, M. S. Ganti, S. Garpman, O. Gavrishchuk, F. J M Geurts, T. K. Ghosh, R. Glasow, S. K. Gupta, B. Guskov, H. A. Gustafsson, H. H. Gutbrod, R. Higuchi, I. Hrivnacova, M. Ippolitov, H. Kalechofsky, R. Kamermans, K. H. Kampert, K. Karadjev, K. Karpio, S. Kato, S. Kees, C. Klein-Bösing, S. Knoche, B. W. Kolb, I. Kosarev, I. Koutcheryaev, T. Krümpel, A. Kugler, P. Kulinich, M. Kurata, K. Kurita, N. Kuzmin, I. Langbein, A. Lebedev, Y. Y. Lee, H. Löhner, L. Luquin, D. P. Mahapatra, V. Manko, M. Martin, G. Martínez, A. Maximov, G. Mgebrichvili, Y. Miake, M. F. Mir, G. C. Mishra, Y. Miyamoto, B. Mohanty, D. Morrison, D. S. Mukhopadhyay, H. Naef, B. K. Nandi, S. K. Nayak, T. K. Nayak, S. Neumaier, A. Nianine, V. Nikitine, S. Nikolaev, P. Nilsson, S. Nishimura, P. Nomokonov, J. Nystrand, F. E. Obenshain, A. Oskarsson, I. Otterlund, M. Pachr, S. Pavliouk, T. Peitzmann, V. Petracek, W. Pinganaud, F. Plasil, U. von Poblotzki, M. L. Purschke, J. Rak, R. Raniwala, S. Raniwala, V. S. Ramamurthy, N. K. Rao, F. Retiere, K. Reygers, G. Roland, L. Rosselet, I. Roufanov, C. Roy, J. M. Rubio, H. Sako, 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, N. Solomey, S. P. Sorensen, P. Stankus, G. Stefanek, P. Steinberg, E. Stenlund, D. Stüken, M. Sumbera, T. Svensson, M. D. Trivedi, A. Tsvetkov, L. Tykarski, J. Urbahn, E. C V D Pijll, N. V. Eijndhoven, G. J V Nieuwenhuizen, A. Vinogradov, Y. P. Viyogi, A. Vodopianov, S. Vörös, B. Wyslouch, K. Yagi, Y. Yokota, G. R. Young

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Two-particle correlations have been measured for identified π- from central 158 A GeV Pb+Pb collisions and fitted radii of about 7 fm in all dimensions have been obtained. A multi-dimensional study of the radii as a function of kT is presented, including a full correction for the resolution effects of the apparatus. The cross term R2 out-long of the standard fit in the Longitudinally CoMoving System (LCMS) and the vL parameter of the generalised Yano-Koonin fit are compatible with 0, suggesting that the source undergoes a boost invariant expansion. The shapes of the correlation functions in Qinv and Qspace = √Q2 x + Q2 y + Q2 z have been analyzed in detail. They are not Gaussian but better represented by exponentials. As a consequence fitting Gaussians to these correlation functions may produce different radii depending on the acceptance of the experimental setup used for the measurement.

Original languageEnglish (US)
Pages (from-to)445-451
Number of pages7
JournalEuropean Physical Journal C
Volume16
Issue number3
StatePublished - 2000

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Interferometry
interferometry
collisions
radii
acceleration (physics)
acceptability
expansion

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Aggarwal, M. M., Agnihotri, A., Ahammed, Z., Angelis, A. L. S., Antonenko, V., Arefiev, V., ... Young, G. R. (2000). Central Pb+Pb collisions at 158 A GeV/c studied by π-π- interferometry. European Physical Journal C, 16(3), 445-451.

Central Pb+Pb collisions at 158 A GeV/c studied by π-π- interferometry. / Aggarwal, M. M.; Agnihotri, A.; Ahammed, Z.; Angelis, A. L S; Antonenko, V.; Arefiev, V.; Astakhov, V.; Avdeitchikov, V.; Awes, T. C.; Baba, P. V K S; Badyal, S. K.; Barlag, C.; Bathe, S.; Batiounia, B.; Bernier, T.; Bhalla, K. B.; Bhatia, V. S.; Blume, C.; Bock, R.; Bohne, E. M.; Böröcz, Z.; Bucher, D.; Buijs, A.; Büsching, H.; Carlen, L.; Chalyshev, V.; Chattopadhyay, S.; Cherbatchev, R.; Chujo, T.; Claussen, A.; Das, A. C.; Decowski, M. P.; Delagrange, H.; Djordjadze, V.; Donni, P.; Doubovik, I.; Dutt, S.; Dutta Majumdar, M. R.; El Chenawi, K.; Eliseev, S.; Enosawa, K.; Foka, P.; Fokin, S.; Ganti, M. S.; Garpman, S.; Gavrishchuk, O.; Geurts, F. J M; Ghosh, T. K.; Glasow, R.; Gupta, S. K.; Guskov, B.; Gustafsson, H. A.; Gutbrod, H. H.; Higuchi, R.; Hrivnacova, I.; Ippolitov, M.; Kalechofsky, H.; Kamermans, R.; Kampert, K. H.; Karadjev, K.; Karpio, K.; Kato, S.; Kees, S.; Klein-Bösing, C.; Knoche, S.; Kolb, B. W.; Kosarev, I.; Koutcheryaev, I.; Krümpel, T.; Kugler, A.; Kulinich, P.; Kurata, M.; Kurita, K.; Kuzmin, N.; Langbein, I.; Lebedev, A.; Lee, Y. Y.; Löhner, H.; Luquin, L.; Mahapatra, D. P.; Manko, V.; Martin, M.; Martínez, G.; Maximov, A.; Mgebrichvili, G.; Miake, Y.; Mir, M. F.; Mishra, G. C.; Miyamoto, Y.; Mohanty, B.; Morrison, D.; Mukhopadhyay, D. S.; Naef, H.; Nandi, B. K.; Nayak, S. K.; Nayak, T. K.; Neumaier, S.; Nianine, A.; Nikitine, V.; Nikolaev, S.; Nilsson, P.; Nishimura, S.; Nomokonov, P.; Nystrand, J.; Obenshain, F. E.; Oskarsson, A.; Otterlund, I.; Pachr, M.; Pavliouk, S.; Peitzmann, T.; Petracek, V.; Pinganaud, W.; Plasil, F.; von Poblotzki, U.; Purschke, M. L.; Rak, J.; Raniwala, R.; Raniwala, S.; Ramamurthy, V. S.; Rao, N. K.; Retiere, F.; Reygers, K.; Roland, G.; Rosselet, L.; Roufanov, I.; Roy, C.; Rubio, J. M.; Sako, H.; 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.; Solomey, N.; Sorensen, S. P.; Stankus, P.; Stefanek, G.; Steinberg, P.; Stenlund, E.; Stüken, D.; Sumbera, M.; Svensson, T.; Trivedi, M. D.; Tsvetkov, A.; Tykarski, L.; Urbahn, J.; Pijll, E. C V D; Eijndhoven, N. V.; Nieuwenhuizen, G. J V; Vinogradov, A.; Viyogi, Y. P.; Vodopianov, A.; Vörös, S.; Wyslouch, B.; Yagi, K.; Yokota, Y.; Young, G. R.

In: European Physical Journal C, Vol. 16, No. 3, 2000, p. 445-451.

Research output: Contribution to journalArticle

Aggarwal, MM, Agnihotri, A, Ahammed, Z, Angelis, ALS, Antonenko, V, Arefiev, V, Astakhov, V, Avdeitchikov, V, Awes, TC, Baba, PVKS, Badyal, SK, Barlag, C, Bathe, S, Batiounia, B, Bernier, T, Bhalla, KB, Bhatia, VS, Blume, C, Bock, R, Bohne, EM, Böröcz, Z, Bucher, D, Buijs, A, Büsching, H, Carlen, L, Chalyshev, V, Chattopadhyay, S, Cherbatchev, R, Chujo, T, Claussen, A, Das, AC, Decowski, MP, Delagrange, H, Djordjadze, V, Donni, P, Doubovik, I, Dutt, S, Dutta Majumdar, MR, El Chenawi, K, Eliseev, S, Enosawa, K, Foka, P, Fokin, S, Ganti, MS, Garpman, S, Gavrishchuk, O, Geurts, FJM, Ghosh, TK, Glasow, R, Gupta, SK, Guskov, B, Gustafsson, HA, Gutbrod, HH, Higuchi, R, Hrivnacova, I, Ippolitov, M, Kalechofsky, H, Kamermans, R, Kampert, KH, Karadjev, K, Karpio, K, Kato, S, Kees, S, Klein-Bösing, C, Knoche, S, Kolb, BW, Kosarev, I, Koutcheryaev, I, Krümpel, T, Kugler, A, Kulinich, P, Kurata, M, Kurita, K, Kuzmin, N, Langbein, I, Lebedev, A, Lee, YY, Löhner, H, Luquin, L, Mahapatra, DP, Manko, V, Martin, M, Martínez, G, Maximov, A, Mgebrichvili, G, Miake, Y, Mir, MF, Mishra, GC, Miyamoto, Y, Mohanty, B, Morrison, D, Mukhopadhyay, DS, Naef, H, Nandi, BK, Nayak, SK, Nayak, TK, Neumaier, S, Nianine, A, Nikitine, V, Nikolaev, S, Nilsson, P, Nishimura, S, Nomokonov, P, Nystrand, J, Obenshain, FE, Oskarsson, A, Otterlund, I, Pachr, M, Pavliouk, S, Peitzmann, T, Petracek, V, Pinganaud, W, Plasil, F, von Poblotzki, U, Purschke, ML, Rak, J, Raniwala, R, Raniwala, S, Ramamurthy, VS, Rao, NK, Retiere, F, Reygers, K, Roland, G, Rosselet, L, Roufanov, I, Roy, C, Rubio, JM, Sako, H, 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, Solomey, N, Sorensen, SP, Stankus, P, Stefanek, G, Steinberg, P, Stenlund, E, Stüken, D, Sumbera, M, Svensson, T, Trivedi, MD, Tsvetkov, A, Tykarski, L, Urbahn, J, Pijll, ECVD, Eijndhoven, NV, Nieuwenhuizen, GJV, Vinogradov, A, Viyogi, YP, Vodopianov, A, Vörös, S, Wyslouch, B, Yagi, K, Yokota, Y & Young, GR 2000, 'Central Pb+Pb collisions at 158 A GeV/c studied by π-π- interferometry', European Physical Journal C, vol. 16, no. 3, pp. 445-451.
Aggarwal MM, Agnihotri A, Ahammed Z, Angelis ALS, Antonenko V, Arefiev V et al. Central Pb+Pb collisions at 158 A GeV/c studied by π-π- interferometry. European Physical Journal C. 2000;16(3):445-451.
Aggarwal, M. M. ; Agnihotri, A. ; Ahammed, Z. ; Angelis, A. L S ; Antonenko, V. ; Arefiev, V. ; Astakhov, V. ; Avdeitchikov, V. ; Awes, T. C. ; Baba, P. V K S ; Badyal, S. K. ; Barlag, C. ; Bathe, S. ; Batiounia, B. ; Bernier, T. ; Bhalla, K. B. ; Bhatia, V. S. ; Blume, C. ; Bock, R. ; Bohne, E. M. ; Böröcz, Z. ; Bucher, D. ; Buijs, A. ; Büsching, H. ; Carlen, L. ; Chalyshev, V. ; Chattopadhyay, S. ; Cherbatchev, R. ; Chujo, T. ; Claussen, A. ; Das, A. C. ; Decowski, M. P. ; Delagrange, H. ; Djordjadze, V. ; Donni, P. ; Doubovik, I. ; Dutt, S. ; Dutta Majumdar, M. R. ; El Chenawi, K. ; Eliseev, S. ; Enosawa, K. ; Foka, P. ; Fokin, S. ; Ganti, M. S. ; Garpman, S. ; Gavrishchuk, O. ; Geurts, F. J M ; Ghosh, T. K. ; Glasow, R. ; Gupta, S. K. ; Guskov, B. ; Gustafsson, H. A. ; Gutbrod, H. H. ; Higuchi, R. ; Hrivnacova, I. ; Ippolitov, M. ; Kalechofsky, H. ; Kamermans, R. ; Kampert, K. H. ; Karadjev, K. ; Karpio, K. ; Kato, S. ; Kees, S. ; Klein-Bösing, C. ; Knoche, S. ; Kolb, B. W. ; Kosarev, I. ; Koutcheryaev, I. ; Krümpel, T. ; Kugler, A. ; Kulinich, P. ; Kurata, M. ; Kurita, K. ; Kuzmin, N. ; Langbein, I. ; Lebedev, A. ; Lee, Y. Y. ; Löhner, H. ; Luquin, L. ; Mahapatra, D. P. ; Manko, V. ; Martin, M. ; Martínez, G. ; Maximov, A. ; Mgebrichvili, G. ; Miake, Y. ; Mir, M. F. ; Mishra, G. C. ; Miyamoto, Y. ; Mohanty, B. ; Morrison, D. ; Mukhopadhyay, D. S. ; Naef, H. ; Nandi, B. K. ; Nayak, S. K. ; Nayak, T. K. ; Neumaier, S. ; Nianine, A. ; Nikitine, V. ; Nikolaev, S. ; Nilsson, P. ; Nishimura, S. ; Nomokonov, P. ; Nystrand, J. ; Obenshain, F. E. ; Oskarsson, A. ; Otterlund, I. ; Pachr, M. ; Pavliouk, S. ; Peitzmann, T. ; Petracek, V. ; Pinganaud, W. ; Plasil, F. ; von Poblotzki, U. ; Purschke, M. L. ; Rak, J. ; Raniwala, R. ; Raniwala, S. ; Ramamurthy, V. S. ; Rao, N. K. ; Retiere, F. ; Reygers, K. ; Roland, G. ; Rosselet, L. ; Roufanov, I. ; Roy, C. ; Rubio, J. M. ; Sako, H. ; 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. ; Solomey, N. ; Sorensen, S. P. ; Stankus, P. ; Stefanek, G. ; Steinberg, P. ; Stenlund, E. ; Stüken, D. ; Sumbera, M. ; Svensson, T. ; Trivedi, M. D. ; Tsvetkov, A. ; Tykarski, L. ; Urbahn, J. ; Pijll, E. C V D ; Eijndhoven, N. V. ; Nieuwenhuizen, G. J V ; Vinogradov, A. ; Viyogi, Y. P. ; Vodopianov, A. ; Vörös, S. ; Wyslouch, B. ; Yagi, K. ; Yokota, Y. ; Young, G. R. / Central Pb+Pb collisions at 158 A GeV/c studied by π-π- interferometry. In: European Physical Journal C. 2000 ; Vol. 16, No. 3. pp. 445-451.
@article{36a72b7c4a604034a8365178c91bdd15,
title = "Central Pb+Pb collisions at 158 A GeV/c studied by π-π- interferometry",
abstract = "Two-particle correlations have been measured for identified π- from central 158 A GeV Pb+Pb collisions and fitted radii of about 7 fm in all dimensions have been obtained. A multi-dimensional study of the radii as a function of kT is presented, including a full correction for the resolution effects of the apparatus. The cross term R2 out-long of the standard fit in the Longitudinally CoMoving System (LCMS) and the vL parameter of the generalised Yano-Koonin fit are compatible with 0, suggesting that the source undergoes a boost invariant expansion. The shapes of the correlation functions in Qinv and Qspace = √Q2 x + Q2 y + Q2 z have been analyzed in detail. They are not Gaussian but better represented by exponentials. As a consequence fitting Gaussians to these correlation functions may produce different radii depending on the acceptance of the experimental setup used for the measurement.",
author = "Aggarwal, {M. M.} and A. Agnihotri and Z. Ahammed 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 C. Barlag and S. Bathe and B. Batiounia and T. Bernier and Bhalla, {K. B.} and Bhatia, {V. S.} and C. Blume and R. Bock and Bohne, {E. M.} and Z. B{\"o}r{\"o}cz and D. Bucher and A. Buijs and H. B{\"u}sching and L. Carlen and V. Chalyshev and S. Chattopadhyay and R. Cherbatchev and T. Chujo and A. Claussen and Das, {A. C.} and Decowski, {M. P.} and H. Delagrange and V. Djordjadze and P. Donni and I. Doubovik and S. Dutt and {Dutta Majumdar}, {M. R.} and {El Chenawi}, K. and S. Eliseev and K. Enosawa and P. Foka and S. Fokin and Ganti, {M. S.} and S. Garpman and O. Gavrishchuk and Geurts, {F. J M} and Ghosh, {T. K.} and R. Glasow and Gupta, {S. K.} and B. Guskov and Gustafsson, {H. A.} and Gutbrod, {H. H.} and R. Higuchi and I. Hrivnacova and M. Ippolitov and H. Kalechofsky and R. Kamermans and Kampert, {K. H.} and K. Karadjev and K. Karpio and S. Kato and S. Kees and C. Klein-B{\"o}sing and S. Knoche and Kolb, {B. W.} and I. Kosarev and I. Koutcheryaev and T. Kr{\"u}mpel and A. Kugler and P. Kulinich and M. Kurata and K. Kurita and N. Kuzmin and I. Langbein and A. Lebedev and Lee, {Y. Y.} and H. L{\"o}hner and L. Luquin and Mahapatra, {D. P.} and V. Manko and M. Martin and G. Mart{\'i}nez and A. Maximov and G. Mgebrichvili and Y. Miake and Mir, {M. F.} and Mishra, {G. C.} and Y. Miyamoto and B. Mohanty and D. Morrison and Mukhopadhyay, {D. S.} and H. Naef and Nandi, {B. K.} and Nayak, {S. K.} and Nayak, {T. K.} and S. Neumaier and A. Nianine and V. Nikitine and S. Nikolaev and P. Nilsson and S. Nishimura and P. Nomokonov and J. Nystrand and Obenshain, {F. E.} and A. Oskarsson and I. Otterlund and M. Pachr and S. Pavliouk and T. Peitzmann and V. Petracek and W. Pinganaud and F. Plasil and {von Poblotzki}, U. and Purschke, {M. L.} and J. Rak and R. Raniwala and S. Raniwala and Ramamurthy, {V. S.} and Rao, {N. K.} and F. Retiere and K. Reygers and G. Roland and L. Rosselet and I. Roufanov and C. Roy and Rubio, {J. M.} and H. Sako 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 N. Solomey and Sorensen, {S. P.} and P. Stankus and G. Stefanek and P. Steinberg and E. Stenlund and D. St{\"u}ken and M. Sumbera and T. Svensson and Trivedi, {M. D.} and A. Tsvetkov and L. Tykarski and J. Urbahn 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. Wyslouch and K. Yagi and Y. Yokota and Young, {G. R.}",
year = "2000",
language = "English (US)",
volume = "16",
pages = "445--451",
journal = "European Physical Journal C",
issn = "1434-6044",
publisher = "Springer New York",
number = "3",

}

TY - JOUR

T1 - Central Pb+Pb collisions at 158 A GeV/c studied by π-π- interferometry

AU - Aggarwal, M. M.

AU - Agnihotri, A.

AU - Ahammed, Z.

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 - Barlag, C.

AU - Bathe, S.

AU - Batiounia, B.

AU - Bernier, T.

AU - Bhalla, K. B.

AU - Bhatia, V. S.

AU - Blume, C.

AU - Bock, R.

AU - Bohne, E. M.

AU - Böröcz, Z.

AU - Bucher, D.

AU - Buijs, A.

AU - Büsching, H.

AU - Carlen, L.

AU - Chalyshev, V.

AU - Chattopadhyay, S.

AU - Cherbatchev, R.

AU - Chujo, T.

AU - Claussen, A.

AU - Das, A. C.

AU - Decowski, M. P.

AU - Delagrange, H.

AU - Djordjadze, V.

AU - Donni, P.

AU - Doubovik, I.

AU - Dutt, S.

AU - Dutta Majumdar, M. R.

AU - El Chenawi, K.

AU - Eliseev, S.

AU - Enosawa, K.

AU - Foka, P.

AU - Fokin, S.

AU - Ganti, M. S.

AU - Garpman, S.

AU - Gavrishchuk, O.

AU - Geurts, F. J M

AU - Ghosh, T. K.

AU - Glasow, R.

AU - Gupta, S. K.

AU - Guskov, B.

AU - Gustafsson, H. A.

AU - Gutbrod, H. H.

AU - Higuchi, R.

AU - Hrivnacova, I.

AU - Ippolitov, M.

AU - Kalechofsky, H.

AU - Kamermans, R.

AU - Kampert, K. H.

AU - Karadjev, K.

AU - Karpio, K.

AU - Kato, S.

AU - Kees, S.

AU - Klein-Bösing, C.

AU - Knoche, S.

AU - Kolb, B. W.

AU - Kosarev, I.

AU - Koutcheryaev, I.

AU - Krümpel, T.

AU - Kugler, A.

AU - Kulinich, P.

AU - Kurata, M.

AU - Kurita, K.

AU - Kuzmin, N.

AU - Langbein, I.

AU - Lebedev, A.

AU - Lee, Y. Y.

AU - Löhner, H.

AU - Luquin, L.

AU - Mahapatra, D. P.

AU - Manko, V.

AU - Martin, M.

AU - Martínez, G.

AU - Maximov, A.

AU - Mgebrichvili, G.

AU - Miake, Y.

AU - Mir, M. F.

AU - Mishra, G. C.

AU - Miyamoto, Y.

AU - Mohanty, B.

AU - Morrison, D.

AU - Mukhopadhyay, D. S.

AU - Naef, H.

AU - Nandi, B. K.

AU - Nayak, S. K.

AU - Nayak, T. K.

AU - Neumaier, S.

AU - Nianine, A.

AU - Nikitine, V.

AU - Nikolaev, S.

AU - Nilsson, P.

AU - Nishimura, S.

AU - Nomokonov, P.

AU - Nystrand, J.

AU - Obenshain, F. E.

AU - Oskarsson, A.

AU - Otterlund, I.

AU - Pachr, M.

AU - Pavliouk, S.

AU - Peitzmann, T.

AU - Petracek, V.

AU - Pinganaud, W.

AU - Plasil, F.

AU - von Poblotzki, U.

AU - Purschke, M. L.

AU - Rak, J.

AU - Raniwala, R.

AU - Raniwala, S.

AU - Ramamurthy, V. S.

AU - Rao, N. K.

AU - Retiere, F.

AU - Reygers, K.

AU - Roland, G.

AU - Rosselet, L.

AU - Roufanov, I.

AU - Roy, C.

AU - Rubio, J. M.

AU - Sako, H.

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 - Solomey, N.

AU - Sorensen, S. P.

AU - Stankus, P.

AU - Stefanek, G.

AU - Steinberg, P.

AU - Stenlund, E.

AU - Stüken, D.

AU - Sumbera, M.

AU - Svensson, T.

AU - Trivedi, M. D.

AU - Tsvetkov, A.

AU - Tykarski, L.

AU - Urbahn, J.

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 - Wyslouch, B.

AU - Yagi, K.

AU - Yokota, Y.

AU - Young, G. R.

PY - 2000

Y1 - 2000

N2 - Two-particle correlations have been measured for identified π- from central 158 A GeV Pb+Pb collisions and fitted radii of about 7 fm in all dimensions have been obtained. A multi-dimensional study of the radii as a function of kT is presented, including a full correction for the resolution effects of the apparatus. The cross term R2 out-long of the standard fit in the Longitudinally CoMoving System (LCMS) and the vL parameter of the generalised Yano-Koonin fit are compatible with 0, suggesting that the source undergoes a boost invariant expansion. The shapes of the correlation functions in Qinv and Qspace = √Q2 x + Q2 y + Q2 z have been analyzed in detail. They are not Gaussian but better represented by exponentials. As a consequence fitting Gaussians to these correlation functions may produce different radii depending on the acceptance of the experimental setup used for the measurement.

AB - Two-particle correlations have been measured for identified π- from central 158 A GeV Pb+Pb collisions and fitted radii of about 7 fm in all dimensions have been obtained. A multi-dimensional study of the radii as a function of kT is presented, including a full correction for the resolution effects of the apparatus. The cross term R2 out-long of the standard fit in the Longitudinally CoMoving System (LCMS) and the vL parameter of the generalised Yano-Koonin fit are compatible with 0, suggesting that the source undergoes a boost invariant expansion. The shapes of the correlation functions in Qinv and Qspace = √Q2 x + Q2 y + Q2 z have been analyzed in detail. They are not Gaussian but better represented by exponentials. As a consequence fitting Gaussians to these correlation functions may produce different radii depending on the acceptance of the experimental setup used for the measurement.

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M3 - Article

VL - 16

SP - 445

EP - 451

JO - European Physical Journal C

JF - European Physical Journal C

SN - 1434-6044

IS - 3

ER -