PION EXCESS FOR THE OBSERVED NUCLEAR EFFECTS IN DEEP-INELASTIC SCATTERING AND DRELL-YAN PRODUCTION

被引：0

作者：

HWANG, WYP

SPETH, J

WAMBACH, J

机构：

[1] FORSCHUNGSZENTRUM JULICH, FORSCHUNGZENTRUM JULICH, INST KERNPHYS, W-5170 JULICH 1, GERMANY

[2] UNIV ILLINOIS, DEPT PHYS, URBANA, IL 61801 USA

来源：

CHINESE JOURNAL OF PHYSICS | 1993年 / 31卷 / 03期

关键词：

D O I：

暂无

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In light of recent developments on nucleon and pion parton distributions as well as on meson excess in the nuclear medium, we reinvestigate the role of pion excess as the primary source for nuclear effects observed in deep inelastic scattering (DIS) and Drell-Yan (DY) production. We show that after inclusion of shadowing the pion excess model explains satisfactorily the EMC data in DIS. There is also considerable improvement in the description of the E772 DY production data, given the uncertainties in the pion distribution functions.

引用

页码：353 / 362

页数：10

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