Anomalous J/psi suppression in Pb+Pb collisions at 158xA GeV/c.

被引：0
|
作者：
Abreu, MC
Alexa, C
Alessandro, B
Astruc, J
Baglin, C
Baldit, A
Bellaiche, F
Bedjidian, M
Beole, S
Borhani, A
Boldea, V
Bordalo, P
Bussiere, A
Capony, V
Castor, J
Ceru, M
Chambon, T
Chaurand, B
Chevrot, I
Cheynis, B
Chiavassa, E
Cicalo, C
Constantinescu, S
Dabrowski, W
DeFalco, A
Dellacasa, G
DeMarco, N
Devaux, A
Dita, S
Drapier, O
Espagnon, B
Fargeix, J
Fleuret, F
Force, P
Gallio, M
Gavrilov, YK
Gerschel, C
Giubellino, P
Golubeva, MB
Gonin, M
Gorodetzky, P
Grossiord, JY
Guaita, P
Guber, FF
Guichard, A
Haroutunian, R
Idzik, M
Jouan, D
Karavitcheva, TL
Kossakowski, R
机构：
[1] LAPP, IN2P3, CNRS, F-74019 ANNECY LE VIEUX, FRANCE
[2] IFA, R-76900 BUCHAREST, ROMANIA
[3] UNIV CAGLIARI, IST NAZL FIS NUCL, CAGLIARI, ITALY
[4] LPC, IN2P3, CNRS, F-63177 CLERMONT FERRAND, FRANCE
[5] CERN, CH-1211 GENEVA 23, SWITZERLAND
[6] LIP, P-1000 LISBON, PORTUGAL
[7] RUSSIAN ACAD SCI, INST NUCL RES, MOSCOW 117312, RUSSIA
[8] INST PHYS NUCL, IN2P3, CNRS, F-91406 ORSAY, FRANCE
[9] CTR RECH NUCL, IN2P3, CNRS, F-67037 STRASBOURG, FRANCE
[10] UNIV TURIN, IST NAZL FIS NUCL, I-10125 TURIN, ITALY
[11] INST PHYS NUCL, IN2P3, CNRS, F-69622 VILLEURBANNE, FRANCE
来源：
NUCLEAR PHYSICS A | 1996年 / 610卷
关键词：
D O I：
暂无
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：
Cross sections for J/psi<,psi>' and Drell-Yan production in Pb+Pb collisions at 158xA GeV/c are presented and compared with results obtained by the NA38 and NA51 collaborations. The Pb+Pb data have been collected by the NA50 collaboration using the NA38 dimuon spectrometer. The Drell-Yan mechanism is found to scale as (A(projectile). B-target) in p+B-target and A(projectile)+B-target collisions including Pb+Pb collisions. Regarding J/psi, an anomalous suppression is observed in Pb+Pb collisions with respect to the suppression observed in p+B-target, O+B-target and S+U collisions. The cross section ratios psi'/(J/psi) are similar in Pb+Pb and S+U collisions.
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收藏
页码：C404 / C417
页数：14
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