학술논문
Constraints on Oscillation Parameters from νe Appearance and νμ Disappearance in NOvA
Document Type
article
Author
Adamson, P; Aliaga, L; Ambrose, D; Anfimov, N; Antoshkin, A; Arrieta-Diaz, E; Augsten, K; Aurisano, A; Backhouse, C; Baird, M; Bambah, BA; Bays, K; Behera, B; Bending, S; Bernstein, R; Bhatnagar, V; Bhuyan, B; Bian, J; Blackburn, T; Bolshakova, A; Bromberg, C; Brown, J; Brunetti, G; Buchanan, N; Butkevich, A; Bychkov, V; Campbell, M; Catano-Mur, E; Childress, S; Choudhary, BC; Chowdhury, B; Coan, TE; Coelho, JAB; Colo, M; Cooper, J; Corwin, L; Cremonesi, L; Cronin-Hennessy, D; Davies, GS; Davies, JP; Derwent, PF; Dharmapalan, R; Ding, P; Djurcic, Z; Dukes, EC; Duyang, H; Edayath, S; Ehrlich, R; Feldman, GJ; Frank, MJ; Gabrielyan, M; Gallagher, HR; Germani, S; Ghosh, T; Giri, A; Gomes, RA; Goodman, MC; Grichine, V; Group, R; Grover, D; Guo, B; Habig, A; Hartnell, J; Hatcher, R; Hatzikoutelis, A; Heller, K; Himmel, A; Holin, A; Hylen, J; Jediny, F; Judah, M; Kafka, GK; Kalra, D; Kasahara, SMS; Kasetti, S; Keloth, R; Kolupaeva, L; Kotelnikov, S; Kourbanis, I; Kreymer, A; Kumar, A; Kurbanov, S; Lang, K; Lee, WM; Lin, S; Liu, J; Lokajicek, M; Lozier, J; Luchuk, S; Maan, K; Magill, S; Mann, WA; Marshak, ML; Matera, K; Matveev, V; Méndez, DP; Messier, MD; Meyer, H; Miao, T; Miller, WH
Source
Physical Review Letters. 118(23)
Subject
Language
Abstract
Results are reported from an improved measurement of ν_{μ}→ν_{e} transitions by the NOvA experiment. Using an exposure equivalent to 6.05×10^{20} protons on target, 33 ν_{e} candidates are observed with a background of 8.2±0.8 (syst.). Combined with the latest NOvA ν_{μ} disappearance data and external constraints from reactor experiments on sin^{2}2θ_{13}, the hypothesis of inverted mass hierarchy with θ_{23} in the lower octant is disfavored at greater than 93% C.L. for all values of δ_{CP}.