Nuclear Drell-Yan effect in a covariant model

被引：2
|
作者：
Korpa, C. L. [1 ]
Dieperink, A. E. L. [2 ]
机构：
[1] Univ Pecs, Dept Theoret Phys, H-7624 Pecs, Hungary
[2] Univ Groningen, Kernfys Versneller Inst, NL-9747 AA Groningen, Netherlands
来源：
PHYSICAL REVIEW C | 2013年 / 87卷 / 01期
关键词：
SCATTERING; DEPENDENCE; FIELDS; MATTER; PIONS;
D O I：
10.1103/PhysRevC.87.014616
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
We investigate effects of a nuclear medium on antiquark distribution in nuclei by applying the results of a recently developed relativistically covariant self-consistent model for the pion and the isobar. We take into account Fermi motion, including Pauli blocking and binding effects on the nucleons and medium effects on the isobar and pion, leading to modest enhancement of the pion light-cone-momentum distribution in large nuclei. As a consequence, the Drell-Yan cross-sectional ratio with respect to the deuteron exceeds one only for small values of the light-cone momentum. DOI:10.1103/PhysRevC.87.014616
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页数：10
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