6533b856fe1ef96bd12b2e54

RESEARCH PRODUCT

Upper limits on the branching ratios tau-]mu-gamma and tau-]e-gamma

Delphi CollaborationMaría Victoria Castillo GiménezEmilio Higón RodríguezAntonio Ferrer SoriaJ. T. M. ChrinEduardo Cortina GilAntonio Ferrer SoriaJuan A. Fuster VerdúCarmen García GarcíaJuan José Gómez CadenasJuan José Hernández ReyJosé ÁNgel Hernando MorataCarlos Lacasta LlácerJosé Julio Lozano BahiloFernando Martínez VidalSalvador Martí GarcíaSergio Navas ConchaJosé Salt CairolsJuan Antonio Valls Ferrer

subject

High Energy Physics::ExperimentFísica nuclearPartícules (Física nuclear)

description

The DELPHI collaboration has searched for lepton flavour violating decays tau -> mugamma and tau -> egamma using a data sample of about 70 pb-1 of integrated luminosity corresponding to 81 000 produced tau+tau- events. No candidates were found for either of the two modes. This yields branching ratio upper limits of B(tau -> egamma) mugamma) < 6.2 × 10-5 at 90% confidence level.

10.1016/0370-2693(95)01045-rhttp://dx.doi.org/10.1016/0370-2693(95)01045-R