Precise measurement of B(τ- → K*0(892)K-ντ), MK*0(892) and ΓK*0(892) from Belle

被引：0
|
作者：
Usuki, Y. [1 ]
Hayasaka, K. [1 ]
Inami, K. [1 ]
Miyazaki, Y. [1 ]
Ohshima, T. [1 ]
机构：
[1] Nagoya Univ, Dept Phys, Nagoya, Aichi 4648602, Japan
来源：
NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS | 2009年 / 189卷
基金：
澳大利亚研究理事会; 日本学术振兴会; 中国国家自然科学基金;
关键词：
TAU-DECAYS;
D O I：
10.1016/j.nuclphysbps.2009.03.032
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：
Making full use of a high-statistical data sample of tau decays recorded in the KEKB-Belle experiment, we have largely improved the precision of the branching fraction B(tau(-) -> K*(0)(892)K(-)nu(tau)) = (1.56 +/- 0.02 +/- 0.09) x 10(-3), and measured the mass and width of K*(0)(892) meson to be (895.10 +/- 0.27 +/- 0.31) MeV/c(2) and (47.23 +/- 0.49 +/- 0.79) MeV, respectively, with better or similar accuracy of the PDG world average values. The first measurement of tau(-) K*(0)(892)K(-)pi(0)nu(tau) decay is also accomplished and beta(tau(-) -> K*(0)(892)K(-)pi(0)nu(tau)) = (2.39 +/- 0.46 +/- 0.26) x 10(-5) is obtained. (All results presented here are preliminary.)
引用
收藏
页码：181 / 186
页数：6
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