EFFECT OF THE 3-NUCLEON FORCE ON THE 3-NUCLEON GROUND-STATE - REDUCIBLE AND IRREDUCIBLE CONTRIBUTIONS

被引：26

作者：

STADLER, A ^{[1
]}

SAUER, PU ^{[1
]}

机构：

[1] UNIV WASHINGTON, DEPT PHYS, SEATTLE, WA 98195 USA

来源：

PHYSICAL REVIEW C | 1992年 / 46卷 / 01期

关键词：

D O I：

10.1103/PhysRevC.46.64

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 Tucson-Melbourne two-pion exchange three-nucleon force is split into a reducible part mediated by DELTA-excitation and an irreducible part not mediated by DELTA-excitation. The triton binding energy is calculated. The irreducible part of the Tucson-Melbourne force is taken into account in the calculation. Its reducible part is discarded, but regenerated by the explicit treatment of the DELTA-isobar in a coupled-channel approach. The remaining irreducible part of the Tucson-Melbourne force makes a nonnegligible contribution to the triton binding energy. The strong dependence of the triton binding energy on the cutoff parameter for the pi-NN vertex in the Tucson-Melbourne force is considerably reduced.

引用

页码：64 / 72

页数：9

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