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

Authors
HWANG WYP SPETH J WAMBACH J
Citation
Wyp. Hwang et al., PION EXCESS FOR THE OBSERVED NUCLEAR EFFECTS IN DEEP-INELASTIC SCATTERING AND DRELL-YAN PRODUCTION, Zhongguo wuli xuekan, 31(3), 1993, pp. 353-362
Citations number
85
Categorie Soggetti
Physics
Journal title
Zhongguo wuli xuekan → ACNP
ISSN journal
05779073
Volume
31
Issue
3
Year of publication
1993
Pages
353 - 362
Database
ISI
SICI code
0577-9073(1993)31:3<353:PEFTON>2.0.ZU;2-#
Abstract
In light of recent developments on nucleon and pion parton distributio ns as well as on meson excess in the nuclear medium, we reinvestigate the role of pion excess as the primary source for nuclear effects obse rved in deep inelastic scattering (DIS) and Drell-Yan (DY) production. We show that after inclusion of shadowing the pion excess model expla ins satisfactorily the EMC data in DIS. There is also considerable imp rovement in the description of the E772 DY production data, given the uncertainties in the pion distribution functions.