Measurements of $\tau$ decay modes and a precise determination of the mass

Brandelik, R.; Orito, S.; Kötz, U.; Gadermann, E.; Poelz, G.; McNeely, W. A.; Kreinick, D.; Braunschweig, W.; Hultschig, H.; Gagern, Ch. v.; DASP Collaboration; Mikenberg, G.; Yamada, S.; Grindhammer, G.; Cords, D.; Petersen, A.; Martyn, H.-U.; Ludwig, J.; Wiik, B. H.; Ringel, J.; Joos, P.; Sturm, W.; Mess, K. H.; Wallraff, W.; Oberlack, H.; Fues, W.; Felst, R.; Schliwa, M.; Krehbiel, H.; Kotthaus, R.; Suda, T.; Notz, D.; Schmüser, P.; Koch, W.; Buschhorn, G.; Totsuka, Y.; Sauerberg, K.; Moffeit, K. C.; de Boer, W.; Gunderson, B.; Sander, H. G.; Römer, O.; Fries, R.; Lynch, H. L.; Rüsch, R.; Wolf, G.; Lierl, H.; Schmitz, D.

doi:10.1016/0370-2693(78)90183-1

Report/Journal Article

PUBDB-2017-02862

Measurements of $\tau$ decay modes and a precise determination of the mass

Brandelik, R. ; Braunschweig, W. ; Martyn, H.-U. ; Sander, H. G. ; Schmitz, D. ; Sturm, W. ; Wallraff, W. ; Cords, D. ; Felst, R. ; Fries, R. ; Gadermann, E. ; Hultschig, H. ; Joos, P. ; Koch, W. ; Kötz, U. ; Krehbiel, H. ; Kreinick, D. ; Lynch, H. L. ; McNeely, W. A. ; Mikenberg, G. ; Moffeit, K. C. ; Notz, D. ; Rüsch, R. ; Schliwa, M. ; Wiik, B. H. ; Wolf, G. ; Grindhammer, G. ; Ludwig, J. ; Mess, K. H. ; Petersen, A. ; Poelz, G. ; Ringel, J. ; Römer, O. ; Sauerberg, K. ; Schmüser, P. ; de Boer, W. ; Buschhorn, G. ; Fues, W. ; Gagern, C. v. ; Gunderson, B. ; Kotthaus, R. ; Lierl, H. ; Oberlack, H. ; Orito, S. ; Suda, T. ; Totsuka, Y. ; Yamada, S. ; DASP Collaboration (Collaboration author)DESY*

1978
North-Holland Publ. Amsterdam

Physics letters / B 73(1), 109 - 114 (1978) [10.1016/0370-2693(78)90183-1]

This record in other databases:

Please use a persistent id in citations: doi:10.1016/0370-2693(78)90183-1

Report No.: DESY-77-081

Abstract: The cross sections for e + e − → e + ( μ + + non showering track + any photons have been measured for cm energies between 3.1 GeV and 5.2 GeV. We observe τ -pair production below the thresholdfor charm production and determine the τ mass to be 1.807 ± 0.020 GeV from a fit to the energy dependence of the cross section. The ration of the leptonic branching ratios B μ / B e = 0.92 ± 0.32 is consistent with eμ-universality. The following branching ratios are determined for a V-A coupling: B(τ → ν τ e ν ) = B(τ → ν τ μ ν ) = 0.182 + 0.028 . B ( τ → ν τ + charged hadron + any photons) = 0.29 ± 0.11, B ( τ → ν τ + three or more charged hadrons + any photons) = 0.35 ± 0.11.

Classification: