The OPERA neutrino experiment in the underground Gran Sasso Laboratory (LNGS) was designed to perform the first detection of neutrino oscillations in direct appearance mode in the vμ→ v τ channel, the v τ signature being the identification of the τ -lepton created in its charged current interaction. The hybrid apparatus consists of a large mass emulsion film/lead target complemented by electronic detectors. Placed in the LNGS, it is exposed to the high-energy long-baseline CERN Neutrino beam to Gran Sasso (CNGS) 730 km away from the neutrino source. The observation of a first v τ candidate event was reported in 2010. In this paper, we discuss the result of the analysis of the data taken during the first two years of operation (2008-2009) underlining the major improvements brought to the analysis chain and to the Monte Carlo simulations. The statistical significance of the one event observed so far is then evaluated to 95%. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.

Agafonova, N., Aleksandrov, A., Altinok, O., Anokhina, A., Aoki, S., Ariga, A., et al. (2012). Search for nu(mu) -> nu(tau) oscillation with the OPERA experiment in the CNGS beam. NEW JOURNAL OF PHYSICS, 14, 033017 [10.1088/1367-2630/14/3/033017].

Search for nu(mu) -> nu(tau) oscillation with the OPERA experiment in the CNGS beam

Brunetti, G;Tenti, M;TERRANOVA, FRANCESCO;
2012

Abstract

The OPERA neutrino experiment in the underground Gran Sasso Laboratory (LNGS) was designed to perform the first detection of neutrino oscillations in direct appearance mode in the vμ→ v τ channel, the v τ signature being the identification of the τ -lepton created in its charged current interaction. The hybrid apparatus consists of a large mass emulsion film/lead target complemented by electronic detectors. Placed in the LNGS, it is exposed to the high-energy long-baseline CERN Neutrino beam to Gran Sasso (CNGS) 730 km away from the neutrino source. The observation of a first v τ candidate event was reported in 2010. In this paper, we discuss the result of the analysis of the data taken during the first two years of operation (2008-2009) underlining the major improvements brought to the analysis chain and to the Monte Carlo simulations. The statistical significance of the one event observed so far is then evaluated to 95%. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.
Articolo in rivista - Articolo scientifico
neutrino physics
English
2012
14
033017
none
Agafonova, N., Aleksandrov, A., Altinok, O., Anokhina, A., Aoki, S., Ariga, A., et al. (2012). Search for nu(mu) -> nu(tau) oscillation with the OPERA experiment in the CNGS beam. NEW JOURNAL OF PHYSICS, 14, 033017 [10.1088/1367-2630/14/3/033017].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/46681
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