TAU-DECAYS TO PIONS

被引：300
|
作者：
KUHN, JH
SANTAMARIA, A
机构：
[1] Max-Planck-Institut für Physik und Astrophysik, München 40, D-8000
来源：
ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS | 1990年 / 48卷 / 03期
关键词：
D O I：
10.1007/BF01572024
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
Semileptonic τ decays to two and three pions are considered. Based on recent data for the pion form factor a new prediction for Γ(τ→vπ-0)/Γ(τ→veve) of 1.32±0.05 is derived. The chiral model-supplemented by vector dominance-is used to predict rate and differential distributions for the three pion mode in good agreement with present data. The parity violating asymmetry which has been predicted theoretically and observed experimentally is studied and found to be fairly insensitive towards the details of the model for the hadronic decays. © 1990 Springer-Verlag.
引用
收藏
页码：445 / 452
页数：8
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