PRODUCTION AND PROPERTIES OF THE TAU-LEPTON IN E+E- ANNIHILATION AT CM ENERGIES FROM 12-GEV TO 31.6-GEV

PRODUCTION AND PROPERTIES OF THE TAU-LEPTON IN E+E- ANNIHILATION AT CM ENERGIES FROM 12-GEV TO 31.6-GEV

We have observed τ production in e+e- annihilation at centre-of-mass energies between 12 and 31.6 GeV with cross sections in agreement with the QED τ-pair cross section. Branching ratios for τ decay have been measured and are consistent with the world averages. We have determined the cutoff paramete...

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Podrobná bibliografie
Hlavní autoři: Brandelik, R, Braunschweig, W, Gather, K, Kadansky, V, Lubelsmeyer, K, Mattig, P, Martyn, H, Peise, G, Rimkus, J, Sander, H, Schmitz, D, Schultzvondratzig, A, Trines, D, Wallraff, W, Boerner, H, Fischer, H, Hartmann, H, Hilger, E, Hillen, W, Knop, G, Leu, P, Lohr, B, Wedemeyer, R, Wermes, N, Wollstadt, M
Médium: Journal article
Jazyk:English
Vydáno: 1980
Popis
Shrnutí:We have observed τ production in e+e- annihilation at centre-of-mass energies between 12 and 31.6 GeV with cross sections in agreement with the QED τ-pair cross section. Branching ratios for τ decay have been measured and are consistent with the world averages. We have determined the cutoff parameters of QED Λ+ (Λ-) to be > 73 GeV (82 GeV) and have obtained an upper limit on the τ lifetime of 1.4 × 10-12 s(95% CL). © 1980.

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