Measurement of the τ Lepton Polarization and R(D*) in the Decay

We report the first measurement of the \ensuremath{\tau}lepton polarization {P}_{\ensuremath{\tau}}({D}^{*})in the decay \overline{B}\ensuremath{\rightarrow}{D}^{*}{\ensuremath{\tau}}^{\ensuremath{-}}{\overline{\ensuremath{\nu}}}_{\ensuremath{\tau}}as well as a new measurement of the ratio of the branching fractions...