MASS DEPENDENCE OF PI(0)-PRODUCTION IN HEAVY-ION COLLISIONS AT 1 A GEV

被引：55
|
作者：
SCHWALB, O
PFEIFFER, M
BERG, FD
FRANKE, M
KUHN, W
METAG, V
NOTHEISEN, M
NOVOTNY, R
RITMAN, J
ROBIGLANDAU, ME
ALARD, JP
BASTID, N
BRUMMUND, N
DUPIEUX, P
GOBBI, A
HERRMANN, N
HILDENBRAND, KD
HLAVAC, S
JEONG, SC
LOHNER, H
MONTAROU, G
NEUBERT, W
RASCHKE, AE
SIMON, RS
SODAN, U
SUMBERA, M
TEH, K
VENEMA, LB
WILSCHUT, HW
WESSELS, JP
WIENOLD, T
WOHLFAHRT, D
机构：
[1] KERNFYS VERSNELLER INST, 9747 AA GRONINGEN, NETHERLANDS
[2] GESELL SCHWERIONENFORSCH MBH, D-64220 DARMSTADT, GERMANY
[3] UNIV MUNSTER, INST KERNPHYS, D-48149 MUNSTER, GERMANY
[4] LAB PHYS CORPUSCULAIRE, F-63177 CLERMONT FERRAND, FRANCE
[5] UNIV HEIDELBERG, INST PHYS, D-69177 HEIDELBERG, GERMANY
[6] FORSCHUNGSZENTRUM ROSSENDORF, D-01314 DRESDEN, GERMANY
[7] SLOVAK ACAD SCI, INST PHYS, BRATISLAVA, SLOVAKIA
来源：
PHYSICS LETTERS B | 1994年 / 321卷 / 1-2期
关键词：
D O I：
10.1016/0370-2693(94)90322-0
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The production of neutral pions has been studied in the reactions Ar-40+Ca-nat, Kr-86+Zr-nat and (197)AU+(197)AU at 1 A GeV. For high energy pions emitted from the heavier systems a steeper than linear rise of the pion multiplicity with the centrality of the reaction is observed, indicating a pion production process other than binary nucleon-nucleon collisions. At low transverse momenta an enhancement of the pi(0)-multiplicity increasing with the mass of the collision system is found. Systematic discrepancies between the experimental results and recent BW, QMD and Cascade calculations are discussed.
引用
收藏
页码：20 / 25
页数：6
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