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

页码：20 / 25

页数：6

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