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Article overview
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Pions in the nuclear medium and Drell-Yan scattering | | A. E. L. Dieperink
; C. L. Korpa
; | | Date: |
12 Mar 1997 | | Journal: | Phys.Rev. C55 (1997) 2665-2674 | | Subject: | nucl-th hep-ph | | 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 contribution also included. Both the imaginary and real part 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 target is close to unity in agreement with experiment. | | Source: | arXiv, nucl-th/9703025 | | Services: | Forum | Review | PDF | Favorites | |
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