Limits on muon-neutrino to tau-neutrino oscillations induced by a sterile neutrino state obtained by OPERA at the CNGS beam

Agafonova N<sup>*</sup>; Aleksandrov A; Anokhina A; Aoki S; Ariga A; Ariga T; Bender D; Bertolin A G; Bodnarchuk I; Bozza C; Brugnera R; Buonaura A; Buontempo S; Buettner B; Chernyavsky M; Chukanov A; Consiglio L; D&#39; Ambrosio N; De Lellis G; De Serio M; Sanchez P Del Amo; Di Crescenzo A; Di Ferdinando D; Di Marco N; Dmitrievski S; Dracos M; Duchesneau D; Dusini S; Dzhatdoev T; Ebert J; Ereditato A; Fini R A; Fukuda T; Galati G

doi:10.1007/JHEP06(2015)069

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Limits on muon-neutrino to tau-neutrino oscillations induced by a sterile neutrino state obtained by OPERA at the CNGS beam

作者：Agafonova N^*; Aleksandrov A; Anokhina A; Aoki S; Ariga A; Ariga T; Bender D; Bertolin A G; Bodnarchuk I; Bozza C; Brugnera R; Buonaura A; Buontempo S; Buettner B; Chernyavsky M; Chukanov A; Consiglio L; D'Ambrosio N; De Lellis G; De Serio M; Sanchez P Del Amo; Di Crescenzo A; Di Ferdinando D; Di Marco N; Dmitrievski S; Dracos M; Duchesneau D; Dusini S; Dzhatdoev T; Ebert J; Ereditato A; Fini R A; Fukuda T; Galati G

来源：The Journal of High Energy Physics, 2015, 2015(6): 069.

DOI：10.1007/JHEP06(2015)069

摘要

The OPERA experiment, exposed to the CERN to Gran Sasso nu(mu) beam, collected data from 2008 to 2012. Four oscillated nu(tau) Charged Current interaction candidates have been detected in appearance mode, which are consistent with nu(mu) -> nu(tau) oscillations at the atmospheric Delta m(2) within the "standard" three-neutrino framework. In this paper, the OPERA nu(tau) appearance results are used to derive limits on the mixing parameters of a massive sterile neutrino.