GLUON AND PION EXCHANGE CURRENTS IN THE NUCLEON

被引：104

作者：

BUCHMANN, A

HERNANDEZ, E

YAZAKI, K

机构：

[1] Department of Physics, Faculty of Science, University of Tokyo, Bunkyo-ku, Tokyo

来源：

PHYSICS LETTERS B | 1991年 / 269卷 / 1-2期

基金：

日本学术振兴会;

关键词：

D O I：

10.1016/0370-2693(91)91448-5

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We evaluate the nucleon charge form factor in the constituent quark model including gluon and pion exchange currents. In addition, we take into account the effect of configuration mixing. We find a large contribution of exchange currents in the neutron. For a pure (0s)3 wave function we obtain a new relation which relates the neutron charge radius and the DELTA and N masses to the quark core radius b, i.e. <r2>n = -b2(M-DELTA-M(N))/M(N).

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页码：35 / 42

页数：8

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