From a sample of 152,000 tau decays collected by the ALEPH detector at LEP an upper limit of 24 MeV at 95% CL on the tau neutrino mass has been determined. The limit is obtained using a two dimensional likelihood fit of the visible energy and the invariant mass distribution of 25 tau --> 5 pi(pi(0)) nu(tau) events.
AN UPPER LIMIT FOR THE TAU-NEUTRINO MASS FROM TAU-]5-PI(PI(0))NU(TAU) DECAYS
ROLANDI, LUIGI;LIGABUE, FRANCO;LUSIANI, Alberto;
1995
Abstract
From a sample of 152,000 tau decays collected by the ALEPH detector at LEP an upper limit of 24 MeV at 95% CL on the tau neutrino mass has been determined. The limit is obtained using a two dimensional likelihood fit of the visible energy and the invariant mass distribution of 25 tau --> 5 pi(pi(0)) nu(tau) events.File in questo prodotto:
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