A study of τ decays involving η and ω mesons

The 132 pb−1 of data collected by ALEPH from 1991 to 1994 have been used to analyze and production in decays. The following branching fractions have been measured: \begin{eqnarray*} B(\tau^-\to\nu_{\tau}\omega h^-)&=& (1.91\pm 0.07\pm 0.06 )\times 10^{-2},\\ B(\tau^-\to\nu_{\tau}\omega h^-\pi^0)&=&(4.3\pm 0.6\pm 0.5)\times 10^{-3},\\ B(\tau^-\to\nu_{\tau}\eta K^-)&=&(2.9^{+1.3}_{-1.2}\pm 0.7)\times 10^{-4},\\ B(\tau^-\to\nu_{\tau}\eta h^-\pi^0)&=&(1.8\pm 0.4\pm 0.2)\times 10^{-3} \end{eqnarray*} and the 95% C.L. limit B(−−)6210−4 has been obtained. The − and −0 rates and dynamics are found in agreement with the predictions made from e+e− annihilation data with the help of isospin invariance (CVC).