TAU-POLARIZATION MEASUREMENTS AT LEP AND SLC

被引：94
|
作者：
HAGIWARA, K
MARTIN, AD
ZEPPENFELD, D
机构：
[1] UNIV WISCONSIN,DEPT PHYS,MADISON,WI 53706
[2] KEK NAT LAB HIGH ENERGY PHYS,TSUKUBA,IBARAKI 305,JAPAN
来源：
PHYSICS LETTERS B | 1990年 / 235卷 / 1-2期
关键词：
D O I：
10.1016/0370-2693(90)90120-U
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
A precision determination of sin2θw at LEP and SLC is based on observations of e-e+→τ-τ+ using τ→πv decays to determine the τ polarization. We describe how the accuracy can be significantly improved by (i) observing the decays τ→ρ{variant}v and τ→a1v with the subsequent ρ{variant}→ππ and a1→πππ decays acting as polarization analysers, and (ii) using polarization correlations measurable in the double (τ-τ+) decay distribution. © 1990.
引用
收藏
页码：198 / 202
页数：5
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