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 R2out-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 = √Q2x + Q2y + Q2z 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 language | English (US) |
|---|---|
| Pages (from-to) | 445-451 |
| Number of pages | 7 |
| Journal | European Physical Journal C |
| Volume | 16 |
| Issue number | 3 |
| DOIs | |
| State | Published - 2000 |
ASJC Scopus subject areas
- Engineering (miscellaneous)
- Physics and Astronomy (miscellaneous)
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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 journal › Article › peer-review
}
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 R2out-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 = √Q2x + Q2y + Q2z 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 R2out-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 = √Q2x + Q2y + Q2z 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.
UR - http://www.scopus.com/inward/record.url?scp=0000621899&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0000621899&partnerID=8YFLogxK
U2 - 10.1007/s100520000413
DO - 10.1007/s100520000413
M3 - Article
AN - SCOPUS:0000621899
VL - 16
SP - 445
EP - 451
JO - European Physical Journal C
JF - European Physical Journal C
SN - 1434-6044
IS - 3
ER -