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Search for vμ → vτ oscillation using the τ decay modes into a single charged particle

par Eskut, E;Annis, Patrio ;El-Aidi, R.;Gruwe, Magali ;Mommaert, Chantal;Vander Donckt, Muriel ;van de Vyver, Bart;Vilain, Pierre ;Wilquet, Gaston ; [et al.]
Référence Physics letters. Section B, 434, 1-2, page (205-213)
Publication Publié, 1998-08

Article révisé par les pairs

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Résumé :

Part of the neutrino events collected in 1994-1995 by the CHORUS experiment has been analysed. A search was performed for vτ charged current interactions followed by the τ lepton decay into a single charged negative hadron, a possible indication for vμ → vτ. oscillation. A sample of 6844 events without an identified muon has been located in the emulsion target. Within the selection criteria, no τ- candidate has been found. Combining this result with the one from the search for vτ interactions using the muonic decay mode (36 182 events with an identified muon), a 90% C.L. limit on the mixing angle sin22θμτ < 1.8 · 10-3 (at large Δm2) has been derived. © 1998 Published by Elsevier Science B.V. All rights reserved.