A method to determine the tau neutrino helicity using polarized taus

Abstract A method is presented to extract the tau neutrino helicity, or equivalently, the chirality parameter γva, independent of any tau polarization which may be present. The method is thus well-suited to measurements using taus produced from the Z0 and is complementary to analyses using tau correlations since it provides the sign of the chirality parameter which is otherwise unavailable without recourse to lower energy experiments where taus are unpolarized. Results of Monte Carlo studies and comments regarding the use of the technique in experiments are also included.