tau decays involving eta and omega mesons in ALEPH

被引：1
|
作者：
Rouge, A
机构：
[1] L.P.N.H.E., Ecole Polytechnique-IN2P3/CNRS
来源：
NUCLEAR PHYSICS B | 1997年
关键词：
D O I：
10.1016/S0920-5632(97)00215-6
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：
The 132 pb(-1) of data collected by ALEPH from 1991 to 1994 have been used to analyse eta and omega production in tau decays. The following branching fractions have been measured: B(tau(-) --> nu(tau)omega h(-)) = (1.91 +/- 0.07 +/- 0.06) x 10(-2), B(tau(-) --> nu(tau)omega h(-)pi(0)) = (4.3 +/- 0.6 +/- 0.5) x 10(-3) B(tau(-) --> nu(tau)eta K-) = (2.9(-1.2)(+1.3) +/- 0.7) x 10(-4), B(tau(-) --> nu(tau)eta h(-)pi(0)) = (1.8 +/- 0.4 +/- 0.2) x 10(-3) and the 95% C.L. limit B(tau(-) --> nu(tau)eta pi(-)) < 6.2 x 10(-4) has been obtained. The omega pi(-) and eta pi(-)pi(0) rates and dynamics are found in agreement with the predictions made from e(+)e(-) annihilation data with the help of isospin invariance (CVC).
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页码：189 / 193
页数：5
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