Quark distributions in the nucleon based on a relativistic three-body approach to the Nambu-Jona-Lasinio model

被引：39

作者：

Mineo, H

Bentz, W

Yazaki, K

机构：

[1] Univ Tokyo, Fac Sci, Dept Phys, Bunkyo Ku, Tokyo 113, Japan

[2] Tokyo Womans Christian Univ, Fac Humanities & Sci, Dept Phys, Tokyo 1678585, Japan

来源：

PHYSICAL REVIEW C | 1999年 / 60卷 / 06期

关键词：

D O I：

10.1103/PhysRevC.60.065201

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：

Quark light cone momentum distributions in the nucleon are calculated in a relativistic three-body approach to the Nambu-Jona-Lasinio model by using a simple "static approximation" for the Faddeev kernel. A method is presented which automatically satisfies the number and momentum sum rules, even in the regularized theory. In order to assess the sensitivity to the regularization scheme, two schemes which can be formulated in terms of light cone variables are discussed. The effects of the (composite) pion cloud are taken into account in a convolution approach, and the violation of the Gottfried sum rule is discussed. After performing the Q(2) evolution, the resulting distributions are compared to the empirical ones. [S0556-2813(99)06011-2].

引用

页数：10

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