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Observation of Radiative Leptonic Decay of the Tau Lepton

Authors :
Bergfeld, T.
Eisenstein, B. I.
Ernst, J.
Gladding, G. E.
Gollin, G. D.
Hans, R. M.
Johnson, E.
Karliner, I.
Marsh, M. A.
Palmer, M.
Plager, C.
Sedlack, C.
Selen, M.
Thaler, J. J.
Williams, J.
Edwards, K. W.
Janicek, R.
Patel, P. M.
Sadoff, A. J.
Ammar, R.
Baringer, P.
Alice Bean
Besson, D.
Davis, R.
Kotov, S.
Kravchenko, I.
Kwak, N.
Zhao, X.
Anderson, S.
Frolov, V. V.
Kubota, Y.
Lee, S. J.
Mahapatra, R.
O Neill, J. J.
Poling, R.
Riehle, T.
Smith, A.
Ahmed, S.
Alam, M. S.
Athar, S. B.
Jian, L.
Ling, L.
Mahmood, A. H.
Saleem, M.
Timm, S.
Wappler, F.
Anastassov, A.
Duboscq, J. E.
Gan, K. K.
Gwon, C.
Hart, T.
Honscheid, K.
Kagan, H.
Kass, R.
Lorenc, J.
Schwarthoff, H.
Toerne, E.
Zoeller, M. M.
Richichi, S. J.
Severini, H.
Skubic, P.
Undrus, A.
Bishai, M.
Chen, S.
Fast, J.
Hinson, J. W.
Lee, J.
Menon, N.
Miller, D. H.
Shibata, E. I.
Shipsey, I. P. J.
Kwon, Y.
Lyon, A. L.
Thorndike, E. H.
Jessop, C. P.
Lingel, K.
Marsiske, H.
Perl, M. L.
Savinov, V.
Ugolini, D.
Zhou, X.
Coan, T. E.
Fadeyev, V.
Korolkov, I.
Maravin, Y.
Narsky, I.
Stroynowski, R.
Ye, J.
Wlodek, T.
Artuso, M.
Ayad, R.
Dambasuren, E.
Kopp, S.
Majumder, G.
Moneti, G. C.
Mountain, R.
Schuh, S.
Skwarnicki, T.
Stone, S.
Titov, A.
Viehhauser, G.
Wang, J. C.
Wolf, A.
Wu, J.
Csorna, S. E.
Mclean, K. W.
Marka, S.
Xu, Z.
Godang, R.
Kinoshita, K.
Lai, I. C.
Schrenk, S.
Bonvicini, G.
Cinabro, D.
Greene, R.
Perera, L. P.
Zhou, G. J.
Chan, S.
Eigen, G.
Lipeles, E.
Schmidtler, M.
Shapiro, A.
Sun, W. M.
Urheim, J.
Weinstein, A. J.
Würthwein, F.
Jaffe, D. E.
Masek, G.
Paar, H. P.
Potter, E. M.
Prell, S.
Sharma, V.
Asner, D. M.
Eppich, A.
Gronberg, J.
Hill, T. S.
Lange, D. J.
Morrison, R. J.
Nelson, T. K.
Briere, R. A.
Behrens, B. H.
Ford, W. T.
Gritsan, A.
Krieg, H.
Roy, J.
Smith, J. G.
Alexander, J. P.
Baker, R.
Bebek, C.
Berger, B. E.
Berkelman, K.
Blanc, F.
Boisvert, V.
Cassel, D. G.
Dickson, M.
Drell, P. S.
Ecklund, K. M.
Ehrlich, R.
Foland, A. D.
Gaidarev, P.
Galik, R. S.
Gibbons, L.
Gittelman, B.
Gray, S. W.
Hartill, D. L.
Heltsley, B. K.
Hopman, P. I.
Jones, C. D.
Kreinick, D. L.
Lee, T.
Liu, Y.
Meyer, T. O.
Mistry, N. B.
Ng, C. R.
Nordberg, E.
Patterson, J. R.
Peterson, D.
Riley, D.
Thayer, J. G.
Thies, P. G.
Valant-Spaight, B.
Warburton, A.
Avery, P.
Lohner, M.
Prescott, C.
Rubiera, A. I.
Yelton, J.
Zheng, J.
Brandenburg, G.
Ershov, A.
Gao, Y. S.
Kim, D. Y. -J
Wilson, R.
Browder, T. E.
Li, Y.
Rodriguez, J. L.
Yamamoto, H.
Source :
Scopus-Elsevier
Publication Year :
2000
Publisher :
American Physical Society (APS), 2000.

Abstract

Using 4.68 fb^{-1} of e^+e^- annihilation data collected with the CLEO II detector at the Cornell Electron Storage Ring (CESR) we have studied tau radiative decays tau -> mu nu nu gamma and tau -> e nu nu gamma. For a 10 MeV minimum photon energy in the tau rest frame, the branching fraction of radiative tau decay to a muon or electron is measured to be (3.61+-0.16+-0.35)*10^{-3} or (1.75+-0.06+-0.17)*10^{-2}, respectively. The branching fractions are in agreement with the Standard Model theoretical predictions.<br />11 pages postscript, also available through http://w4.lns.cornell.edu/public/CLNS

Subjects

Subjects :
High Energy Physics - Experiment (hep-ex)
010308 nuclear & particles physics
0103 physical sciences
FOS: Physical sciences
General Physics and Astronomy
High Energy Physics::Experiment
Astrophysics::Cosmology and Extragalactic Astrophysics
010306 general physics
7. Clean energy
01 natural sciences
High Energy Physics - Experiment
3. Good health

Details

ISSN :
10797114 and 00319007
Volume :
84
Database :
OpenAIRE
Journal :
Physical Review Letters
Accession number :
edsair.doi.dedup.....8cabc7ed064d18e87ccab62d5f0be7e5
Full Text :
https://doi.org/10.1103/physrevlett.84.830
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