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R. Barate et al. | Zendy

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An upper limit on the

Author(s) -

R. Barate et al.

Publication year - 1998

Publication title -

the european physical journal c

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.938

H-Index - 198

eISSN - 1434-6052

pISSN - 1434-6044

DOI - 10.1007/s100520050149

Subject(s) - physics , particle physics , neutrino , invariant mass , pi , limit (mathematics) , tau neutrino , upper and lower bounds , nuclear physics , neutrino oscillation , geometry , mathematics , mathematical analysis

A bound on the tau neutrino mass is established using the data collected from 1991 to 1995 at s√≃mZ with the ALEPH detector. Two separate limits are derived by fitting the distribution of visible energy vs invariant mass in τ−→2π−π+ντ and τ−→3π−2π+(π0)ντ decays. The two results are combined to obtain a 95% confidence level upper limit of 18.2 MeV/c 2 on the mass of the tau neutrino

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