An upper limit for the τ neutrino mass from τ → 5π(π0)ντ decays

D Buskulic, D Casper, I De Bonis, D Decamp, P Ghez, C Goy, J.-P Lees, M.-N Minard, P Odier, B Pietrzyk, F Ariztizabal, M Chmeissani (+408 others)
1995 Physics Letters B  
From a sample of 152,000 decays collected by the ALEPH detector at LEP an upper limit of 24 MeV at 95% CL on the neutrino mass has been determined. The limit is obtained using a two dimensional likelihood t of the visible energy and the invariant mass distribution of 25 ! 5( 0 ) events. (To be submitted to Physics Letters B)
doi:10.1016/0370-2693(95)00248-j fatcat:3kedbg55mvcyrh732fhdcfweyu