Search for Lepton and Baryon number violating τ- decays into (p)over-barγ, (p)over-barπ0, (Δ)over-barπ-, and (Δ)over-barπ-

被引：1
|
作者：
Sato, N [1 ]
Miyazaki, Y [1 ]
机构：
[1] Nagoya Univ, Dept Phys, Nagoya, Aichi 4648602, Japan
来源：
NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS | 2005年 / 144卷
关键词：
D O I：
10.1016/j.nuclphysbps.2005.02.025
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：
We have searched for decays that violate both lepton and baryon number using data collected by the Belle detector at the KEKB asymmetric e(+)e(-) collider. No signals are found in tau(-) -> (p) over bar gamma, tau(-) -> (p) over bar pi(0), tau(-) -> (A) over bar pi(-), and tau(-) -> A pi(-) and we set upper limits on the branching fractions of B(tau(-) -> (p) over bar gamma) < 3.0 x 10(-7), B(tau(-) -> <(p)over bar>pi(0)) < 6.5 x 10(-7), B(tau(-) -> <(A)over bar>pi(-)) 1.3 x 10(-7), and B(tau(-) -> A pi(-)) < 0.70 x 10(-7) at the 90% confidence level.
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页码：179 / 184
页数：6
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