Pions in the nuclear medium and Drell-Yan scattering

A. E.L. Dieperink, C. L. Korpa

Research output: Article

19 Citations (Scopus)

Abstract

We investigate the modification of the pion cloud in the nuclear medium and its effect on the nuclear Drell-Yan process. The pion's in-medium self-energy is calculated in a self-consistent delta-hole model, with particle-hole contributions also included. Both the imaginary and real parts of the pion's and delta's self-energy are taken into account and related through a dispersion relation assuring causality. The resulting in-medium pion light-cone momentum distribution shows only a slight enhancement compared to the one of the free nucleon. As a consequence the ratio of the cross section for Drell-Yan scattering on nuclear matter and nucleonic targets is close to unity, in agreement with experiment.

Original languageEnglish
Pages (from-to)2665-2674
Number of pages10
JournalPhysical Review C - Nuclear Physics
Volume55
Issue number5
DOIs
Publication statusPublished - jan. 1 1997

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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