THE PT DEPENDENCE OF DILEPTON PRODUCTION IN NUCLEAR COLLISIONS

被引：14

作者：

SATZ, H ^{[1
]}

机构：

[1] UNIV BIELEFELD, FAK PHYS, W-4800 BIELEFELD, GERMANY

来源：

PHYSICS LETTERS B | 1990年 / 242卷 / 01期

关键词：

D O I：

10.1016/0370-2693(90)91603-9

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The PT distribution of massive lepton pairs produced in hadron-nucleus (h-A) collisions becomes broader with increasing A. In a framework based on perturbative QCD, this effect can be interpreted as elastic initial-state parton scattering, and it is predicted to saturate for large A. We show that an extrapolation of this behaviour to nucleus-nucleus collisions is in accord with measured continuum (Drell-Yan) dilepton behaviour, but that it cannot account for the PT dependence of J/Ψ suppression. Consequently, the behaviour of 〈PT2〉J/Ψ/ 〈PT2〉D-Y in the large-ET region nuclear collisions provides a crucial test for the production of a quark-gluon plasma. © 1990.

引用

页码：107 / 110

页数：4

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