Measurement of the Lambda to p mu /sup -/ nu branching ratio

A sample of 1.2*10/sup 6/ Lambda -hyperons was analyzed in order to detect the rare decay mode: Lambda to p mu /sup -/ nu . The Lambda - hyperons were produced by stopping K/sup -/-mesons in the 81 cm Saclay hydrogen bubble chamber at the CERN PS. The authors obtained for the branching ratio the val...

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Detalles Bibliográficos
Autores principales: Baggett, M, Baggett, N, Eisele, F, Filthuth, Heinz, Frehse, H, Hepp, V, Howard, R, Leitner, E
Lenguaje:eng
Publicado: 1972
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1007/BF01387306
http://cds.cern.ch/record/875723
Descripción
Sumario:A sample of 1.2*10/sup 6/ Lambda -hyperons was analyzed in order to detect the rare decay mode: Lambda to p mu /sup -/ nu . The Lambda - hyperons were produced by stopping K/sup -/-mesons in the 81 cm Saclay hydrogen bubble chamber at the CERN PS. The authors obtained for the branching ratio the value (1.4+or-0.5)*10/sup -4/ based on 20 events, of which 6 have to be attributed to the background from the reaction Lambda to p pi /sup -/, pi /sup -/ to mu /sup -/ nu . The background was determined by a Monte Carlo calculation. (5 refs).

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