Pions in the nuclear medium and Drell-Yan scattering

A. E L Dieperink, C. 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
Publication statusPublished - máj. 1997

Fingerprint

pions
scattering
nucleonics
unity
cones
momentum
energy
augmentation
cross sections

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics

Cite this

Pions in the nuclear medium and Drell-Yan scattering. / Dieperink, A. E L; Korpa, C.

In: Physical Review C - Nuclear Physics, Vol. 55, No. 5, 05.1997, p. 2665-2674.

Research output: Article

@article{95749bac6d5b40f98605397558b97d02,
title = "Pions in the nuclear medium and Drell-Yan scattering",
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.",
author = "Dieperink, {A. E L} and C. Korpa",
year = "1997",
month = "5",
language = "English",
volume = "55",
pages = "2665--2674",
journal = "Physical Review C - Nuclear Physics",
issn = "0556-2813",
publisher = "American Physical Society",
number = "5",

}

TY - JOUR

T1 - Pions in the nuclear medium and Drell-Yan scattering

AU - Dieperink, A. E L

AU - Korpa, C.

PY - 1997/5

Y1 - 1997/5

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=0031502091&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0031502091&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0031502091

VL - 55

SP - 2665

EP - 2674

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

SN - 0556-2813

IS - 5

ER -