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Titolo:
Observation of direct photons in central 158A GeV Pb-208+Pb-208 collisions
Autore:
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; Borocz, Z; Bucher, D; Buijs, A; Busching, 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; Majumdar, MRD; 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-Bosing, C; Knoche, S; Kolb, BW; Kosarev, I; Koutcheryaev, I; Krumpel, T; Kugler, A; Kulinich, P; Kurata, M; Kurita, K; Kuzmin, N; Langbein, I; Lebedev, A; Lee, YY; Lohner, H; Luquin, L; Mahapatra, DP; Manko, V; Martin, M; Martinez, G; Maximov, A; Mgebrichvili, G; Miake, Y; Mir, MF; Mishra, GC; Miyamoto, Y; Mohanty, B; Mora, MJ; 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; Soderstrom, K; Solomey, N; Good, G; Sorensen, SP; Stankus, P; Stefanek, G; Steinberg, P; Stenlund, E; Stuken, D; Sumbera, M; Svensson, T; Trivedi, MD; Tsvetkov, A; Tykarski, L; Urbahn, J; von der Pijll, EC; von Eijndhoven, N; von Nieuwenhuizen, GJ; Vinogradov, A; Viyogi, YP; Vodopianov, A; Voros, S; Wyslouch, B; Yagi, K; Yokota, Y; Young, GR;
Indirizzi:
Panjab Univ, Chandigarh 160014, India Panjab Univ Chandigarh India 160014 anjab Univ, Chandigarh 160014, India Univ Rajasthan, Jaipur 302004, Rajasthan, India Univ Rajasthan Jaipur Rajasthan India 302004 pur 302004, Rajasthan, India Bhabha Atom Res Ctr, Ctr Variable Energy Cyclotron, Calcutta 700064, W Bengal, India Bhabha Atom Res Ctr Calcutta W Bengal India 700064 00064, W Bengal, India Univ Geneva, CH-1211 Geneva 4, Switzerland Univ Geneva Geneva Switzerland 4 v Geneva, CH-1211 Geneva 4, Switzerland RRC Kurchatov Inst, RU-123182 Moscow, Russia RRC Kurchatov Inst Moscow Russia RU-123182 nst, RU-123182 Moscow, Russia Joint Inst Nucl Res, RU-141980 Dubna, Russia Joint Inst Nucl Res Dubna Russia RU-141980 Res, RU-141980 Dubna, Russia Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA Oak Ridge Natl Lab Oak Ridge TN USA 37831 tl Lab, Oak Ridge, TN 37831 USA Univ Jammu, Jammu 180001, India Univ Jammu Jammu India 180001Univ Jammu, Jammu 180001, India Univ Munster, D-48149 Munster, Germany Univ Munster Munster Germany D-48149 v Munster, D-48149 Munster, Germany Ecole Mines, SUBATECH, Nantes, France Ecole Mines Nantes FranceEcole Mines, SUBATECH, Nantes, France GSI Darmstadt, Gesell Schwerionenforsch GmbH, D-64220 Darmstadt, Germany GSI Darmstadt Darmstadt Germany D-64220 GmbH, D-64220 Darmstadt, Germany Univ Utrecht, NIKHEF, NL-3508 TA Utrecht, Netherlands Univ Utrecht Utrecht Netherlands NL-3508 TA 3508 TA Utrecht, Netherlands Univ Lund, SE-22100 Lund, Sweden Univ Lund Lund Sweden SE-22100Univ Lund, SE-22100 Lund, Sweden Univ Tsukuba, Ibaraki, Osaka 305, Japan Univ Tsukuba Ibaraki Osaka Japan 305 v Tsukuba, Ibaraki, Osaka 305, Japan Inst Nucl Phys, CZ-25068 Rez, Czech Republic Inst Nucl Phys Rez Czech Republic CZ-25068 CZ-25068 Rez, Czech Republic Univ Groningen, KVI, NL-9747 AA Groningen, Netherlands Univ Groningen Groningen Netherlands NL-9747 AA A Groningen, Netherlands Inst Nucl Studies, PL-00681 Warsaw, Poland Inst Nucl Studies Warsaw Poland PL-00681 tudies, PL-00681 Warsaw, Poland MIT, Cambridge, MA 02139 USA MIT Cambridge MA USA 02139MIT, Cambridge, MA 02139 USA Inst Phys, Bhubaneswar 751005, Orissa, India Inst Phys Bhubaneswar OrissaIndia 751005 ubaneswar 751005, Orissa, India Univ Tennessee, Knoxville, TN 37996 USA Univ Tennessee Knoxville TN USA 37996 Tennessee, Knoxville, TN 37996 USA
Titolo Testata:
PHYSICAL REVIEW LETTERS
fascicolo: 17, volume: 85, anno: 2000,
pagine: 3595 - 3599
SICI:
0031-9007(20001023)85:17<3595:OODPIC>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
QUARK-GLUON PLASMA; PHASE-TRANSITION; S+AU COLLISIONS; HADRON; GEV/C; SINGLE; 200-GEV/C; SPECTRA; MATTER;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Aggarwal, MM Panjab Univ, Chandigarh 160014, India Panjab Univ Chandigarh India 160014 handigarh 160014, India
Citazione:
M.M. Aggarwal et al., "Observation of direct photons in central 158A GeV Pb-208+Pb-208 collisions", PHYS REV L, 85(17), 2000, pp. 3595-3599

Abstract

A measurement of direct photon production in Pb-208 + Pb-208 collisions at158A GeV has been carried out in the CERN WA98 experiment. The invariant yield of direct photons in central collisions is extracted as a function of transverse momentum in the interval 0.5 < p(T) < 4 GeV/c. A significant direct photon signal, compared to statistical and systematical errors, is seenat p(T) > 1.5 GeV/c. The result constitutes the first observation of direct photons in ultrarelativistic heavy-ion collisions. It could be significant for diagnosis;of quark-gluon-plasma formation.

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Documento generato il 28/11/20 alle ore 03:18:36