Limit on the tau neutrino mass

D. Cinabro, S. Henderson, K. Kinoshita, T. Liu, M. Saulnier, R. Wilson, H. Yamamoto, A. J. Sadoff, R. Ammar, S. Ball, P. Baringer, D. Coppage, N. Copty, R. Davis, N. Hancock, M. Kelly, N. Kwak, H. Lam, Y. Kubota, M. LatteryJ. K. Nelson, S. Patton, D. Perticone, R. Poling, V. Savinov, S. Schrenk, R. Wang, M. S. Alam, I. J. Kim, B. Nemati, J. J. O'Neill, V. Romero, H. Severini, C. R. Sun, M. M. Zoeller, G. Crawford, R. Fulton, D. Fujino, K. K. Gan, H. Kagan, R. Kass, J. Lee, R. Malchow, F. Morrow, Y. Skovpen, M. Sung, C. White, J. Whitmore, P. Wilson, F. Butler

Research output: Contribution to journalArticlepeer-review

25 Scopus citations


A limit on the tau neutrino mass Mντ is obtained from a study of tau decays in the reaction e+e-→τ+τ- at center-of-mass energies ∼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 τ-→3h- 2h+ντ and τ-→2h-h+2π0ντ. The data sample used in this analysis contains 1.77×106 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 Mντ. The limit obtained for both five-hadron modes together is 32.6 MeV at 95% C.L.

Original languageEnglish (US)
Pages (from-to)3700-3704
Number of pages5
JournalPhysical review letters
Issue number24
StatePublished - 1993


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