ISOSPIN BREAKING AND THE PRECISE DETERMINATION OF VUD

被引：27

作者：

DONOGHUE, JF

WYLER, D

机构：

[1] UNIV MASSACHUSETTS,DEPT PHYS,AMHERST,MA 01003

[2] UNIV ZURICH,INST THEORET PHYS,CH-8001 ZURICH,SWITZERLAND

来源：

PHYSICS LETTERS B | 1990年 / 241卷 / 02期

关键词：

D O I：

10.1016/0370-2693(90)91287-L

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We examine a recent claim for a large first-order isospin breaking, due to ρ-ω mixing, in the superallowed 0+ to 0+ nuclear beta decays which provide the best determinations of Vud. We find that no such effect exists, and present general arguments and explicit estimates to indicate that isospin breaking effects from the quark mass difference are not an obstacle to a precise measurement of Vud. © 1990.

引用

页码：243 / 248

页数：6

共 16 条

[1] NONRENORMALIZATION THEOREM FOR STRANGENESS-VIOLATING VECTOR CURRENTS [J].