BOUND-VALENCE-QUARK CONTRIBUTIONS TO HADRON STRUCTURE FUNCTIONS

被引:21
作者
BRODSKY, SJ [1 ]
SCHMIDT, I [1 ]
机构
[1] UNIV TECN FEDERICO SANTA MARIA, VALPARAISO, CHILE
来源
PHYSICAL REVIEW D | 1991年 / 43卷 / 01期
关键词
D O I
10.1103/PhysRevD.43.179
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The conventional separation of "valence"- and "sea"-quark distributions of a hadron implicitly assumes that the quark and antiquark contributions to the sea are identical in shape, although this cannot be strictly correct due to the exclusion principle. A new separation of "bound-valence"- and -"non-valence"-quark distributions of a hadron is proposed which incorporates the Pauli principle and relates the valence component to the wave functions of the bound-state valence constituents. With this new definition, the non-valence-quark distributions correspond to structure functions which would be measured if the valence quarks of the target hadron were chargeless. The bound-valence-quark distributions are not singular at small x, thus allowing for the calculation of sum rules and expectation values which would otherwise be divergent.
引用
收藏
页码:179 / 184
页数:6
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