Abstract
The OPERA experiment was designed to search for oscillations in appearance mode, i.e., by detecting the leptons produced in charged current interactions. The experiment took data from 2008 to 2012 in the CERN Neutrinos to Gran Sasso beam. The observation of the appearance, achieved with four candidate events in a subsample of the data, was previously reported. In this Letter, a fifth candidate event, found in an enlarged data sample, is described. Together with a further reduction of the expected background, the candidate events detected so far allow us to assess the discovery of oscillations in appearance mode with a significance larger than .
- Received 7 July 2015
DOI:https://doi.org/10.1103/PhysRevLett.115.121802
© 2015 American Physical Society
Synopsis
OPERA Bags Fifth Tau Neutrino
Published 17 September 2015
The OPERA experiment crosses the “5 sigma” threshold for detection of muon neutrinos turning into tau neutrinos.
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