RADIATIVE NEUTRON-PROTON CAPTURE IN EFFECTIVE CHIRAL LAGRANGIANS

被引：89

作者：

PARK, TS

MIN, DP

RHO, M

机构：

[1] SEOUL NATL UNIV,CTR THEORET PHYS,SEOUL 151742,SOUTH KOREA

[2] CEA SACLAY,SERV PHYS THEOR,F-91191 GIF SUR YVETTE,FRANCE

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 74卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.74.4153

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We calculate the cross section for the thermal n+pd+ process in chiral perturbation theory to next-to-next-to-leading order using heavy-fermion formalism. The exchange current correction is found to be (4.50.3)% in amplitude, and the chiral perturbation at one-loop order gives the cross section th=3342 mb, which is in agreement with the experimental value 334.20.5 mb. Together with the axial-charge transitions, this provides a strong support for the power of chiral Lagrangians for nuclear physics. © 1995 The American Physical Society.

引用

页码：4153 / 4156

页数：4

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