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

来源：

NUCLEAR PHYSICS A | 1999年 / 654卷 / 01期

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

页码：631C / 634C

页数：4

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