PoS - Proceedings of Science
Volume 337 - Neutrino Oscillation Workshop (NOW2018) - Session I: Oscillation parameters (present)
Final results from OPERA
G. Sirri*  on behalf of the OPERA Collaboration
Full text: pdf
Published on: April 24, 2019
OPERA was a long-baseline experiment located at the Gran Sasso Laboratory and designed to
search for $\nu_\mu \rightarrow \nu_\tau$ oscillations in the CERN-to-Gran Sasso neutrino beam. We report on the
final analysis of the full data sample based on looser selection criteria than in previous analyses
and multivariate approach. Oscillation parameters have been determined with a reduced statistical
uncertainty, and the discovery of tau neutrino appearance is confirmed with an improved
significance level. Moreover, the search for electron neutrino events has been extended to the full
dataset exploiting an improved method for the electron neutrino energy estimation. New limits
have been set in the framework of the 3+1 neutrino model. Results on non-oscillation physics are
also reported.
DOI: https://doi.org/10.22323/1.337.0009
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