Search for disoriented chiral condensates in 158 AGeV Pb+Pb collisions

被引:64
作者
Aggarwal, MM [1 ]
Agnihotri, A
Ahammed, Z
Angelis, ALS
Antonenko, V
Arefiev, V
Astakhov, V
Avdeitchikov, V
Awes, TC
Baba, PVKS
Badyal, SK
Baldine, A
Barabach, L
Barlag, C
Bathe, S
Batiounia, B
Bernier, T
Bhalla, KB
Bhatia, VS
Blume, C
Bock, R
Bohne, EM
Bucher, D
Buijs, A
Buis, EJ
Busching, H
Carlen, L
Chalyshev, V
Chattopadhyay, S
Cherbatchev, R
Chujo, T
Claussen, A
Das, AC
Decowski, MP
Djordjadze, V
Donni, P
Doubovik, I
Majumdar, MRD
El Chenawi, K
Eliseev, S
Enosawa, K
Foka, P
Fokin, S
Frolov, V
Ganti, MS
Garpman, S
Gavrishchuk, O
Geurts, FJM
Ghosh, TK
Glasow, R
机构
[1] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA
[2] Panjab Univ, Chandigarh 160014, India
[3] Univ Rajasthan, Jaipur 302004, Rajasthan, India
[4] Ctr Variable Energy Cyclotron, Calcutta 700064, W Bengal, India
[5] Univ Geneva, CH-1211 Geneva 4, Switzerland
[6] RRC Kurchatov, RU-123182 Moscow, Russia
[7] Joint Nucl Res Inst, RU-141980 Dubna, Russia
[8] Univ Jammu, Jammu 180001, India
[9] Univ Munster, D-48149 Munster, Germany
[10] Ecole Mines, SUBATECH, Nantes, France
[11] Gesell Schwerionenforsch GmbH, D-64220 Darmstadt, Germany
[12] Univ Utrecht, NIKHEF, NL-3508 TA Utrecht, Netherlands
[13] Univ Lund, SE-22100 Lund, Sweden
[14] Univ Tsukuba, Ibaraki, Osaka 305, Japan
[15] Inst Nucl Phys, CZ-25068 Rez, Czech Republic
[16] Univ Groningen, KVI, NL-9747 AA Groningen, Netherlands
[17] Inst Nucl Studies, PL-00681 Warsaw, Poland
[18] MIT, Cambridge, MA 02139 USA
[19] Inst Phys, Bhubaneswar 751005, Orissa, India
[20] Univ Tennessee, Knoxville, TN 37966 USA
关键词
D O I
10.1016/S0370-2693(97)01528-1
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The restoration of chiral symmetry and its subsequent breaking through a phase transition has been predicted to create regions of Disoriented Chiral Condensates (DCC). This phenomenon has been predicted to cause anomalous fluctuations in th; relative production of charged and neutral plans in high-energy hadronic and nuclear collisions. The WA98 experiment has been used to measure charged and photon multiplicities in the central region of 158 AGeV Pb + Pb collisions at the CERN SPS. In a sample of 212646 events, no clear DCC signal can be distinguished. Using a simple DCC model. we have set a 90% C.L. upper limit on the maximum DCC production allowed by the data. (C) 1998 Elsevier Science B.V.
引用
收藏
页码:169 / 179
页数:11
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