1. Observation of Radiative Leptonic Decay of the Tau Lepton
- Author
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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., and Yamamoto, H.
- 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 - 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., 11 pages postscript, also available through http://w4.lns.cornell.edu/public/CLNS
- Published
- 2000
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