We have measured the branching fractions for the hadronic tau decays, tau --> pi/K n pi(degrees) upsilon (0 less than or equal to n less than or equal to 3), with the L3 detector at LEP. Multiphoton final states are analyzed using the fine-grained, high-resolution electromagnetic calorimeter. The decay channels are identified using a neural network method. The results are: BR(tau --> pi/K upsilon) = (11.82 +/- 0.26 +/- 0.43)%, BR(tau --> pi/K pi(degrees) upsilon) = (25.05 +/- 0.35 +/- 0.50)%, BR(tau --> pi/K2 pi(degrees) upsilon) = (8.88 +/- 0.37 +/- 0.42)%, BR(tau --> pi/K3 pi(degrees) upsilon) = (1.70 +/- 0.24 +/- 0.38)%, where the first error quoted is statistical, the second systematic.

Measurement of Exclusive Branching Fractions of Hadronic One-prong Tau-decays / Acciarri, M., Adam, A., Adriani, O., Aguilarbenitez, M., Ahlen, S., Alcaraz, J., Aloisio, A., Alverson, G., Alviggi, M., Ambrosi, G., An, Q., Anderhub, H., Anderson, A.L., Andreev, V.P., Angelescu, T., Antonov, L., Antreasyan, D., Alkhazov, G., Arce, P., Arefiev, A., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 345:(1995), pp. 93-102. [10.1016/0370-2693(94)01587-3]

Measurement of Exclusive Branching Fractions of Hadronic One-prong Tau-decays

ALOISIO, ALBERTO;ALVIGGI, MARIAGRAZIA;CHIEFARI, GIOVANNI;L. LISTA;MEROLA, LEONARDO;NAPOLITANO, MARCO;PATRICELLI, SERGIO;SCIACCA, CRISOSTOMO;
1995

Abstract

We have measured the branching fractions for the hadronic tau decays, tau --> pi/K n pi(degrees) upsilon (0 less than or equal to n less than or equal to 3), with the L3 detector at LEP. Multiphoton final states are analyzed using the fine-grained, high-resolution electromagnetic calorimeter. The decay channels are identified using a neural network method. The results are: BR(tau --> pi/K upsilon) = (11.82 +/- 0.26 +/- 0.43)%, BR(tau --> pi/K pi(degrees) upsilon) = (25.05 +/- 0.35 +/- 0.50)%, BR(tau --> pi/K2 pi(degrees) upsilon) = (8.88 +/- 0.37 +/- 0.42)%, BR(tau --> pi/K3 pi(degrees) upsilon) = (1.70 +/- 0.24 +/- 0.38)%, where the first error quoted is statistical, the second systematic.
1995
Measurement of Exclusive Branching Fractions of Hadronic One-prong Tau-decays / Acciarri, M., Adam, A., Adriani, O., Aguilarbenitez, M., Ahlen, S., Alcaraz, J., Aloisio, A., Alverson, G., Alviggi, M., Ambrosi, G., An, Q., Anderhub, H., Anderson, A.L., Andreev, V.P., Angelescu, T., Antonov, L., Antreasyan, D., Alkhazov, G., Arce, P., Arefiev, A., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 345:(1995), pp. 93-102. [10.1016/0370-2693(94)01587-3]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/478897
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