Author/Authors :
CHORUS Collaboration، نويسنده , , E. Eskut، نويسنده , , A. Kayis-Topaksu، نويسنده , , G. Onengüt، نويسنده , , R. van Dantzig، نويسنده , , M. de Jong، نويسنده , , J. Konijn، نويسنده , , O. Melzer، نويسنده , , R.G.C. Oldeman، نويسنده , , C.A.F.J. van der Poel، نويسنده , , J.W.E Uiterwijk، نويسنده , , J.L. Visschers، نويسنده , , M. M. Güler، نويسنده , , M. Serin-Zeyrek، نويسنده , , Ali R. Sever، نويسنده , , P. Tolun، نويسنده , , M.T. Zeyrek، نويسنده , , N. Armenise، نويسنده , , F. Cassol، نويسنده , , M.G. Catanesi، نويسنده , , et al.، نويسنده ,
Abstract :
Part of the neutrino events collected in 1994-1995 by the CHORUS experiment has been analysed. A search was performed for ντ charged current interactions followed by the τ lepton decay into a single charged negative hadron, a possible indication for νμ→ντ 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 ντ 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.
