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    τ Leptonic Branching Ratios and a Search for Goldstone-Boson Decay

    R. M. Baltrusaitis, J. J. Becker, G. T. Blaylock, J. S. Brown, K. O. Bunnell, T. H. Burnett, R. E. Cassell, D. Coffman, V. Cook et al.

    D. H. Coward, S. Dado, D. E. Dorfan, G. P. Dubois, A. L. Duncan, K. F. Einsweiler, B. I. Eisenstein, R. Fabrizio, G. Gladding, F. Grancagnolo, R. P. Hamilton, J. Hauser, C. A. Heusch, D. G. Hitlin, L. Köpke, W. S. Lockman, U. Mallik, P. M. Mockett, R. F. Mozley, A. Nappi, A. Odian, R. Partridge, J. Perrier, S. A. Plaetzer, J. D. Richman, J. R. Roehrig, J. J. Russell, H. F. W. Sadrozinski, M. Scarlatella, T. L. Schalk, R. H. Schindler, A. Seiden, C. Simopoulos, J. C. Sleeman, A. L. Spadafora, I. E. Stockdale, J. J. Thaler, W. Toki, B. Tripsas, F. Villa, A. Wattenberg, A. J. Weinstein, N. Wermes, H. J. Willutzki, D. Wisinski, W. J. Wisniewski, and G. Wolf

    • California Institute of Technology, Pasadena, California 91125 University of California at Santa Cruz, Santa Cruz, California 95064 University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 Stanford Linear Accelerator Center, Stanford, California 94305 University of Washington, Seattle, Washington 98195

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    Phys. Rev. Lett. 55, 1842 – Published 28 October, 1985

    DOI: https://doi.org/10.1103/PhysRevLett.55.1842

    Abstract

    Pairs of τ leptons produced at s=3.77 GeV have been studied in eμ, ee, and μμ final states. The leptonic branching ratios have been measured to be B(τ→eνν)=(18.2±0.7±0.5)% and B(τ→μνν)=(18.0±1.0±0.6)%. Limits have been set for the two-body decays τ→eG and τ→μG, where G is a light Goldstone boson.

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    Phys. Rev. Lett. 55, 1842– Published 28 October, 1985
    • Received 31 July 1985

    © 1985 American Physical Society

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