A limit on the mass of the ντ

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ID: 272158
1998
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Abstract
A limit on the mass of the tau neutrino mντ is derived from 4.5×106 tau pairs produced in an integrated luminosity of 5.0 fb−1 of e+e−→γ∗→τ+τ− reactions at center of mass energies ≈ 10.6 GeV. The measurement technique involves a two-dimensional extended likelihood analysis, including the dependence of the end-point population on mντ, and allows for the first time an explicit background contribution. We use the the decays τ→5πντ and τ→3π2π0ντ to obtain an upper limit of 30 MeV/c2 at 95% C.L.
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Authors R. Ammar, P. Baringer, Alice Bean, D. Besson, D. Coppage, C. Darling, R. Davis, S. Kotov, I. Kravchenko, N. Kwak, L. Zhou, S. Anderson, Y. Kubota, S.J. Lee, J.J. O'neill, Ronald Poling, T. Riehle, A. Smith, M.S. Alam, S.B. Athar, Z. Ling, A.H. Mahmood, S. Timm, F. Wappler, A. Anastassov, J.E. Duboscq, D. Fujino, K.K. Gan, T. Hart, K. Honscheid, H. Kagan, R. Kass, J. Lee, H. Schwarthoff, M.B. Spencer, M. Sung, A. Undrus, A. Wolf, M.M. Zoeller, S.J. Richichi, H. Severini, P. Skubic, M. Bishai, J. Fast, J.W. Hinson, N. Menon, D.H. Miller, E.I. Shibata, I.p.j. Shipsey, M. Yurko, S. Glenn, Y. Kwon, A.L. Lyon, S. Roberts, E.H. Thorndike, C.P. Jessop, K. Lingel, H. Marsiske, M.L. Perl, V. Savinov, D. Ugolini, X. Zhou, T.E. Coan, V. Fadeyev, I. Korolkov, Y. Maravin, I. Narsky, V. Shelkov, J. Staeck, R. Stroynowski, I. Volobouev, J. Ye, M. Artuso, F. Azfar, A. Efimov, M. Goldberg, D. He, S. Kopp, G.C. Moneti, R. Mountain, S. Schuh, T. Skwarnicki, S. Stone, G. Viehhauser, J.C. Wang, X. Xing, J. Bartelt, S.E. Csorna, V. Jain, K.W. McLean, S. Marka, R. Godang, K. Kinoshita, I.C. Lai, P. Pomianowski, S. Schrenk, G. Bonvicini, D. Cinabro, R. Greene, L.P. Perera
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Journal physics letters b
Year 1998
DOI
10.1016/s0370-2693(98)00539-5
URL
https://sciprofiles.com/publication/view/de1f51dd0d2ff1267c3564fdb8dc71f3
Keywords
tau neutrino mass

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