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Limit on the tau neutrino mass
Ammar, Raymond G. Ball, S. Baringer, Philip S. Coppage, Don Copty, N. Davis, Robin E. P. Hancock, N. Kelly, M. Kwak, Nowhan Lam, H.
Ammar, Raymond G.
Ball, S.
Baringer, Philip S.
Coppage, Don
Copty, N.
Davis, Robin E. P.
Hancock, N.
Kelly, M.
Kwak, Nowhan
Lam, H.
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Abstract
A limit on the tau neutrino mass M(nu)tau is obtained from a study of tau decays in the reaction e+e- --> tau+tau- at center-of-mass energies is similar to 10.6 GeV. The result is based on an end-point analysis of the invariant mass spectrum of the decay products in the decay modes tau- --> 3h-2h+nu(tau), and tau- --> 2h-h+2pi0nu(tau). The data sample used in this analysis contains 1.77 x 10(6) tau pairs, corresponding to an integrated luminosity of 1.92 fb-1, and is substantially larger than previous data samples used to place a limit on M(nu)tau. The limit obtained for both five-hadron modes together is 32.6 MeV at 95% C.L.
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1993-06
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AMERICAN PHYSICAL SOC
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p3700_1.pdf
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CINABRO, D, HENDERSON, S, et al. Limit on the tau neutrino mass. PHYSICAL REVIEW LETTERS. June 1993. 70(24) : 3700-3704