Determination of the branching ratio and the separate Kl3+ decay rates

Autor: P. Petiau, Francesco Romano, E. Calimani, P. Ladrón, B. Aubert, D. Haidt, P. Chliapnikov, S. Ciampolillo, A. Ferrer, V. Brisson, G.W. London, J. Stein, G. Piscitelli, S.N. Tovey, T.I. Pedersen, L. Kluberg, R. Aguilar-Lloret, J. Lemonne, L.M. Chounet, F. Mattiolo, R. Llosá, Dong Lê, S. Natali, T. Eichten, J.P. Lowys, K. Schultze, F. Biffis
Rok vydání: 1968
Předmět:
Zdroj: Physics Letters B. 27:586-589
ISSN: 0370-2693
DOI: 10.1016/0370-2693(68)90041-5
Popis: A sample of K+ mesons stopped in the CERN 1.1 m3 heavy liquid bubble chamber is used to determine the K l 3+ decay rates. We find 0.604 ± 0.022 for the K μ3 + K e 3 + branching ratio, and from this we deduce a mean value for ξ= ƒ − ƒ + of -0.6 ± 0.2. The separate K μ3 τ and K e 3 τ branching ratios were found to be 0.510 ± 0.017 and 0.846 ± 0.021, respectively.
Databáze: OpenAIRE