THE AXIAL EXCHANGE CHARGE OPERATOR AND THE NUCLEON NUCLEON-INTERACTION

被引：63

作者：

KIRCHBACH, M

RISKA, DO

TSUSHIMA, K

机构：

[1] UNIV HELSINKI,DEPT PHYS,SF-00170 HELSINKI 17,FINLAND

[2] TH DARMSTADT,INST KERNPHYS,W-6100 DARMSTADT,GERMANY

[3] UNIV HELSINKI,THEORET PHYS RES INST,SF-00170 HELSINKI 17,FINLAND

来源：

NUCLEAR PHYSICS A | 1992年 / 542卷 / 04期

关键词：

D O I：

10.1016/0375-9474(92)90260-Q

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：

The short-range contributions to the effective axial charge operator of a nucleon in a nuclear medium that are implied by realistic nucleon-nucleon interaction models cause an enhancement of approximately 40% at nuclear-matter density of the single-nucleon value, the numerical value depending on the potential model. Combined with the approximately 45-60% enhancement caused by pion exchange, this yields a net enhancement of approximately 85-100%, in good agreement with the approximately 100% implied by first forbidden beta-decay transitions in the lead region.

引用

页码：616 / 630

页数：15

共 27 条

[1] CHIRAL SYMMETRY AND THE AXIAL CURRENT IN NUCLEAR-MATTER [J].