Results are reported from an improved measurement of νμ→νe transitions by the NOvA experiment. Using an exposure equivalent to 6.05×1020 protons on target, 33 νe candidates are observed with a background of 8.2±0.8 (syst.). Combined with the latest NOvA νμ disappearance data and external constraints from reactor experiments on sin22θ13, the hypothesis of inverted mass hierarchy with θ23 in the lower octant is disfavored at greater than 93% C.L. for all values of δCP.

Adamson, P., Aliaga, L., Ambrose, D., Anfimov, N., Antoshkin, A., Arrieta-Diaz, E., et al. (2017). Constraints on Oscillation Parameters from νe Appearance and νμ Disappearance in NOvA. PHYSICAL REVIEW LETTERS, 118(23) [10.1103/PhysRevLett.118.231801].

Constraints on Oscillation Parameters from νe Appearance and νμ Disappearance in NOvA

Brunetti G;
2017

Abstract

Results are reported from an improved measurement of νμ→νe transitions by the NOvA experiment. Using an exposure equivalent to 6.05×1020 protons on target, 33 νe candidates are observed with a background of 8.2±0.8 (syst.). Combined with the latest NOvA νμ disappearance data and external constraints from reactor experiments on sin22θ13, the hypothesis of inverted mass hierarchy with θ23 in the lower octant is disfavored at greater than 93% C.L. for all values of δCP.
Articolo in rivista - Articolo scientifico
NOvA, neutrino oscillation
English
2017
118
23
231801
none
Adamson, P., Aliaga, L., Ambrose, D., Anfimov, N., Antoshkin, A., Arrieta-Diaz, E., et al. (2017). Constraints on Oscillation Parameters from νe Appearance and νμ Disappearance in NOvA. PHYSICAL REVIEW LETTERS, 118(23) [10.1103/PhysRevLett.118.231801].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/283997
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