Constraints on Oscillation Parameters from ν_{e} Appearance and ν_{μ} Disappearance in NOvA.

/ Authors

P. Adamson, L. Aliaga, D. Ambrose, N. Anfimov, A. Antoshkin, E. Arrieta-Diaz, K. Augsten, A. Aurisano, C. Backhouse, M. Baird

and 170 more authors

B. Bambah, K. Bays, B. Behera, S. Bending, R. Bernstein, V. Bhatnagar, B. Bhuyan, J. Bian, T. Blackburn, A. Bolshakova, C. Bromberg, J. Brown, G. Brunetti, N. Buchanan, A. Butkevich, V. Bychkov, M. Campbell, E. Catano-Mur, S. Childress, B. Choudhary, B. Chowdhury, T. Coan, J. Coelho, M. Colo, J. Cooper, L. Corwin, L. Cremonesi, D. Cronin-Hennessy, G. Davies, J. Davies, P. Derwent, R. Dharmapalan, P. Ding, Z. Djurcic, E. Dukes, H. Duyang, S. Edayath, R. Ehrlich, G. Feldman, M. Frank, M. Gabrielyan, H. Gallagher, S. Germani, T. Ghosh, A. Giri, R. Gomes, M. Goodman, V. Grichine, R. Group, D. Grover, B. Guo, A. Habig, J. Hartnell, R. Hatcher, A. Hatzikoutelis, K. Heller, A. Himmel, A. Holin, J. Hylen, F. Jediný, M. Judah, G. Kafka, D. Kalra, S. Amcix, S. Kasetti, R. Keloth, L. Kolupaeva, S. Kotelnikov, I. Kourbanis, A. Kreymer, A. Kumar, S. Kurbanov, K. Lang, W. Lee, S. Lin, J. Liu, M. Lokajicek, J. Lozier, S. Luchuk, K. Maan, S. Magill, W. Mann, M. Marshak, K. Matera, V. Matveev, D. Méndez, M. Messier, H. Meyer, T. Miao, W. Miller, S. Mishra, R. Mohanta, A. Moren, L. Mualem, M. Muether, S. Mufson, R. Murphy, J. Musser, J. Nelson, R. Nichol, E. Niner, A. Norman, T. Nosek, Y. Oksuzian, A. Olshevskiy, T. Olson, J. Paley, P. Pandey, R. Patterson, G. Pawloski, D. Pershey, O. Petrova, R. Petti, S. Phan-Budd, R. Plunkett, R. Poling, B. Potukuchi, C. Principato, F. Psihas, A. Radovic, R. Rameika, B. Rebel, B. Reed, D. Rocco, P. Rojas, V. Ryabov, K. Sachdev, P. Sail, O. Samoylov, M. Sánchez, R. Schroeter, J. Sepulveda-Quiroz, P. Shanahan, A. Sheshukov, J. Singh, J. Singh, P. Singh, V. Singh, J. Smolík, N. Solomey, E. Song, A. Sousa, K. Soustruznik, M. Strait, L. Suter, R. Talaga, M. Tamsett, P. Tas, R. B. Thayyullathil, J. Thomas, X. Tian, S. Tognini, J. Tripathi, A. Tsaris, J. Urheim, P. Vahle, J. Vasel, L. Vinton, A. Vold, T. Vrba, B. Wang, M. Wetstein, D. Whittington, S. Wojcicki, J. Wolcott, N. Yadav, S. Yang, J. Zálešák, B. Zamorano, R. Zwaska

/ 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}.

Journal: Physical review letters

DOI: 10.1103/PhysRevLett.118.231801