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 nu(mu) -> nu(tau) channel, the nu(tau) signature being the identification of the tau-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 nu(tau) 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%.

Search for nu(mu) -> nu(tau) oscillation with the OPERA experiment in the CNGS beam / N., A., A., A., O., A., A., A., S., A., A., A., T., A., D., A., A., B., A., B., A. B., D., A., B., C., B., T., B., R., B., F., B., G., B., S., B., A., C., L., C., et al.. - In: NEW JOURNAL OF PHYSICS. - ISSN 1367-2630. - 14:(2012), p. 033017. [10.1088/1367-2630/14/3/033017]

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

LOVERRE, Pier Ferruccio;ROSA, Giovanni;
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 nu(mu) -> nu(tau) channel, the nu(tau) signature being the identification of the tau-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 nu(tau) 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%.
2012
01 Pubblicazione su rivista::01a Articolo in rivista
Search for nu(mu) -> nu(tau) oscillation with the OPERA experiment in the CNGS beam / N., A., A., A., O., A., A., A., S., A., A., A., T., A., D., A., A., B., A., B., A. B., D., A., B., C., B., T., B., R., B., F., B., G., B., S., B., A., C., L., C., et al.. - In: NEW JOURNAL OF PHYSICS. - ISSN 1367-2630. - 14:(2012), p. 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/11573/519354
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