Direct photon production in high-energy heavy-ion collisions

被引:1
|
作者
Manko, V. [5 ]
Aggarwal, M. M. [1 ]
Agnihotri, A. [2 ]
Ahammed, Z. [3 ]
Angelis, A. L. S. [4 ]
Antonenko, V. [5 ]
Arefiev, V. [6 ]
Astakhov, V. [6 ]
Avdeitchikov, V. [6 ]
Awes, T. C. [7 ]
Baba, P. V. K. S. [8 ]
Badyal, S. K. [8 ]
Baldine, A. [6 ]
Barabach, L. [6 ]
Barlag, C. [9 ]
Bathe, S. [9 ]
Batiounia, B. [6 ]
Bernier, T. [10 ]
Bhalla, K. B. [2 ]
Bhatia, V. S. [1 ]
Blume, C. [9 ]
Bock, R. [11 ]
Bohne, E. -M. [9 ]
Boeroecz, Z. [9 ]
Bucher, D. [9 ]
Buijs, A. [12 ]
Buesching, H. [9 ]
Carlen, L. [13 ]
Chalyshev, V. [6 ]
Chattopadhyay, S. [3 ]
Cherbatchev, R. [5 ]
Chujo, T. [14 ]
Claussen, A. [9 ]
Das, A. C. [3 ]
Decowski, M. P. [18 ]
Djordjadze, V. [6 ]
Donni, P. [4 ]
Doubovik, I. [5 ]
Dutt, S. [8 ]
Majunidar, M. R. Dutta [3 ]
El Chenawi, K. [13 ]
Eliseev, S. [15 ]
Enosawa, K. [14 ]
Foka, P. [4 ]
Fokin, S. [5 ]
Frolov, V. [6 ]
Ganti, M. S. [3 ]
Garpman, S. [13 ]
Gavrishchuk, O. [6 ]
Geurts, F. J. M. [12 ]
机构
[1] Univ Panjab, Chandigarh 160014, India
[2] Univ Rajasthan, Jaipur 302004, Rajasthan, India
[3] Variable Energy Cyclotron Ctr, Kolkata 700064, W Bengal, India
[4] Univ Geneva, CH-1211 Geneva 4, Switzerland
[5] RRC Kurchatov Inst, RU-123182 Moscow, Russia
[6] Joint Inst Nucl Res, RU-141980 Dubna, Russia
[7] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA
[8] Univ Jammu, Jammu 180001, India
[9] Univ Munster, D-48149 Munster, Germany
[10] Ecole Mines, SUBATECH, Nantes, France
[11] Gesell Schwerionenforsch GSI, D-64220 Darmstadt, Germany
[12] Univ Utrecht, NIKHEF, NL-3508 TA Utrecht, Netherlands
[13] Lund Univ, SE-22100 Lund, Sweden
[14] Univ Tsukuba, Ibaraki 305, Japan
[15] Nucl Phys Inst, 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 37996 USA
关键词
D O I
10.1016/S0375-9474(00)88515-2
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
Direct thermal photons in the p(t) range of 0 - 5 GeV/c are expected to provide a sensitive probe of the hot dense matter formed in the early stage of relativistic heavy ion collisions. The production of single photons in 158 AGeV Pb+Pb interactions has been studied with the 10080 detector lead glass calorimeter of the WA98 experiment at CERN. Neutral pi(0) cross section has been measured via its two-photon decay branch. At pt >=similar to 1GeV/c single photon yields of similar to 20% of the decay photon yields are observed consistently with different photon identification criteria both for the peripheral and central events.
引用
收藏
页码:631C / 634C
页数:4
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