CURRENT-ALGEBRA CALCULATION OF THE DECAY TAU-]3-PI-NU

被引：17

作者：

GOLDBERG, H

AARON, R

机构：

来源：

PHYSICAL REVIEW LETTERS | 1979年 / 42卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.42.339

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A fit to the integrated rate and 3π mass distribution of the decay mode τ+→π+π+π-ν̄τ has been performed using hard-pion current algebra, including the approximate imposition of unitarity. We find that the existence of an A1 with low mass (mA=1.1 GeV) and narrow width [ΓAtot=150 MeV, Γ(A1→ρπ)=100 MeV] is consistent with the data if there is an appreciable non-ρπ contribution to the matrix element 3π|Aμ|. Such a contact term is predicted to exist by current algebra. © 1979 The American Physical Society.

引用

页码：339 / 342

页数：4

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