The OPERA experiment is searching for νμ ν τ oscillations in appearance mode, i.e., via the direct detection of \tau leptons in \nu -\tau charged-current interactions. The evidence of \nu -\mu \rightarrow \nu -\tau appearance has been previously reported with three \nu -\tau candidate events using a sub-sample of data from the 2008-2012 runs. We report here a fourth \nu -\tau candidate event, with the \tau decaying into a hadron, found after adding the 2012 run events without any muon in the final state to the data sample. Given the number of analyzed events and the low background, \nu -\mu \rightarrow \nu -\tau oscillations are established with a significance of 4.2\sigma

Agafonova, N., Aleksandrov, A., Anokhina, A., Aoki, S., Ariga, A., Ariga, T., et al. (2014). Observation of tau neutrino appearance in the CNGS beam with the OPERA experiment. PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS, 2014(10) [10.1093/ptep/ptu132].

Observation of tau neutrino appearance in the CNGS beam with the OPERA experiment

Tenti, M;TERRANOVA, FRANCESCO;
2014

Abstract

The OPERA experiment is searching for νμ ν τ oscillations in appearance mode, i.e., via the direct detection of \tau leptons in \nu -\tau charged-current interactions. The evidence of \nu -\mu \rightarrow \nu -\tau appearance has been previously reported with three \nu -\tau candidate events using a sub-sample of data from the 2008-2012 runs. We report here a fourth \nu -\tau candidate event, with the \tau decaying into a hadron, found after adding the 2012 run events without any muon in the final state to the data sample. Given the number of analyzed events and the low background, \nu -\mu \rightarrow \nu -\tau oscillations are established with a significance of 4.2\sigma
Articolo in rivista - Articolo scientifico
Physics and Astronomy (all)
English
28-ott-2014
2014
2014
10
101C01
none
Agafonova, N., Aleksandrov, A., Anokhina, A., Aoki, S., Ariga, A., Ariga, T., et al. (2014). Observation of tau neutrino appearance in the CNGS beam with the OPERA experiment. PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS, 2014(10) [10.1093/ptep/ptu132].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/93497
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