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%.
N. AGAFONOVA, A. ALEKSANDROV, O. ALTINOK, A. ANOKHINA, S. AOKI, A. ARIGA, et al. (2012). Search for nu_mu -> nu_tau oscillation with the OPERA experiment in the CNGS beam. NEW JOURNAL OF PHYSICS, 14, 033017-1-033017-17 [10.1088/1367-2630/14/3/033017].
Search for nu_mu -> nu_tau oscillation with the OPERA experiment in the CNGS beam
GIACOMELLI, GIORGIO MARIA;GIORGINI, MIRIAM;MAURI, NICOLETTA;POZZATO, MICHELE;SIOLI, MAXIMILIANO;
2012
Abstract
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%.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.