NUCLEAR-DEPENDENCE OF CHARM PRODUCTION BY A 340 GEV PI-BEAM

被引：28

作者：

ADAMOVICH, M

ALEXANDROV, Y

ANTINORI, F

BARBERIS, D

BEUSCH, W

BUYS, A

DAMERI, M

DAVENPORT, M

DUFEY, JP

FORINO, A

FRENCH, BR

GERASIMOV, S

GESSAROLI, R

GRARD, F

HURST, R

JACHOLKOWSKI, A

KIRK, A

LASSALLE, JC

LEGROS, P

MAZZANTI, P

MERONI, C

MULLER, F

OSCULATI, B

QUARENI, A

REDAELLI, N

ROSSI, L

TOMASINI, G

TORRETTA, D

VIAGGI, F

ZAVERTYAEV, M

机构：

[1] UNIV MONS HAINAUT,B-7000 MONS,BELGIUM

[2] CERN,EUROPEAN ORG NUCL RES,CH-1211 GENEVA 23,SWITZERLAND

[3] IISN,B-7000 MONS,BELGIUM

[4] DIPARTIMENTO FIS,I-16146 GENOA,ITALY

[5] DIPARTIMENTO FIS,I-40126 BOLOGNA,ITALY

[6] DIPARTIMENTO FIS,I-20133 MILAN,ITALY

[7] IST NAZL FIS NUCL,I-16146 GENOA,ITALY

[8] IST NAZL FIS NUCL,I-40126 BOLOGNA,ITALY

[9] IST NAZL FIS NUCL,I-20133 MILAN,ITALY

来源：

PHYSICS LETTERS B | 1992年 / 284卷 / 3-4期

关键词：

D O I：

10.1016/0370-2693(92)90460-L

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Charmed mesons, produced on silicon, copper and tungsten by 340 GeV pi-, have been identified as peaks in invariant mass distributions. The comparison of the yields of charmed particles originating from interactions in Si, Cu and W allows the mass number dependence of the charm hadroproduction cross section to be measured. Assuming the usual parametrization sigma(c)=sigma-0A(alpha), we find alpha=0.92+/-0.06 for charmed mesons with [x(F)]=0.24. We do not find any decrease of a with increasing x(F) in contrast to the case of the production of particles containing only light quarks.

引用

页码：453 / 456

页数：4

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