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
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
收藏
页码:1567 / 1570
页数:4
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