Relative J/psi to psi' suppression in proton-nucleus and nucleus-nucleus collisions

被引：43

作者：

Hufner, J

Kopeliovich, B

机构：

[1] MAX PLANCK INST KERNPHYS,D-69029 HEIDELBERG,GERMANY

[2] JOINT INST NUCL RES,NUCL PROBLEMS LAB,DUBNA 141980,RUSSIA

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.76.192

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We calculate the nuclear suppression for J/psi and psi' production within a coupled channel approach in the subspace of the J/psi and psi' states. We are able to explain why (i) J/psi and psi' show the same suppression from 200 to 800 GeV in proton-nucleus collisions and why (ii) psi' is absorbed more strongly than J/psi in nucleus-nucleus collisions at 200 GeV. Our numerical result, which includes only interactions with nucleons, accounts for half of the observed suppression in sulfur uranium collisions.

引用

页码：192 / 195

页数：4

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