COMPARISON OF P + A AND SI + AU COLLISIONS AT 14.6 GEV/C

被引：80

作者：

ABBOTT, T

机构：

[1] Argonne National Laboratory, Argonne

[2] Brookhaven National Laboratory, Upton

[3] Space Sciences Laboratory, University of California, Berkeley

[4] University of California, Riverside

[5] Columbia University

[6] Nevis Laboratories, Irvington

[7] Hiroshima University

[8] Institute for Nuclear Study, University of Tokyo, Tanashi

[9] Kyushu University

[10] Lawrence Livermore National Laboratory, Livermore

[11] Massachusetts Institute of Technology, Cambridge

[12] Department of Physics, University of Tokyo

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 66卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.66.1567

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The production of pi +/-, K +/-, p has been measured in p + Be and p + Au collisions for comparison with central Si + Au collisions. The inverse slope parameters T0 obtained by an exponential fit with the invariant cross sections in transverse mass are found to be T0p,K+,pi +/- approximately 140 - 160 MeV in p + A collisions, whereas in central Si + Au collisions, T0p, K+ approximately 200-220 MeV > T0-pi +/- approximately 140 - 160 MeV at midrapidity. The pi +/- and K+ distributions are shifted backwards in p + Au compared with p + Be. A gradual increase of (dn/dy)k+ per projectile nucleon is observed from p + Be to p + Au to central Si + Au collisions, while pions show no significant increase.

引用

页码：1567 / 1570

页数：4

共 30 条

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