Authors
Acero, M. A.; Adamson, P; Aliaga, L.; Anfimov, N.; Antoshkin, A.; Arrieta-Diaz, E.; Asquith, L.; Aurisano, A.; Back, A.; Backhouse, C.; Djurcic, Z.; Goodman, M.; Magill, S.; Rafique, A.; Talaga, R.
Abstract
We present new e, , e, and oscillation measurements by the NOvA experiment, with a 50% increase in neutrino-mode beam exposure over the previously reported results. The additional data, combined with previously published neutrino and antineutrino data, are all analyzed using improved techniques and simulations. A joint fit to the e, , e, and candidate samples within the 3-flavor neutrino oscillation framework continues to yield a best-fit point in the normal mass ordering and the upper octant of the 23 mixing angle, with m232=(2.410.07)103eV2 and sin223=0.57+0.030.04. The data disfavor combinations of oscillation parameters that give rise to a large asymmetry in the rates of e and e appearance. This includes values of the charge parity symmetry (CP) violating phase in the vicinity of CP=/2 which are excluded by >3 for the inverted mass ordering, and values around CP=3/2 in the normal ordering which are disfavored at 2 confidence.