First measurement of muon-neutrino disappearance in NOvA

Adamson, P. and Ader, C. and Andrews, M. and Anfimov, N. and Anghel, I. and Arms, K. and Arrieta-Diaz, E. and Aurisano, A. and Ayres, D. and Backhouse, C. and Baird, M. and Bambah, B. A. and Bays, K. and Bernstein, R. and Betancourt, M. and Bhatnagar, V. and Bhuyan, B. and Bian, J. and Biery, K. and Bocean, V. and Bogert, D. and Bolshakova, A. and Bowden, M. and Bower, C. and Broemmelsiek, D. and Bromberg, C. and Brunetti, G. and Bu, X. and Butkevich, A. and Capista, D. and Catano-Mur, E. and Chase, T. R. and Childress, S. and Choudhary, B. C. and Chowdhury, B. and Coan, T. E. and Coelho, J. A. B. and Colo, M. and Corwin, L. and Cronin-Hennessy, D. and Tutto, M. Del and Derwent, P. F. and Deepthi, K. N. and Demuth, D. and Desai, S. and Deuerling, G. and Devan, A. and Dey, J. and Dharmapalan, R. and Nowak, J. (2016) First measurement of muon-neutrino disappearance in NOvA. Physical Review D, 93 (5). ISSN 1550-7998

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This paper reports the first measurement using the NOvA detectors of $\nu_\mu$ disappearance in a $\nu_\mu$ beam. The analysis uses a 14 kton-equivalent exposure of $2.74 \times 10^{20}$ protons-on-target from the Fermilab NuMI beam. Assuming the normal neutrino mass hierarchy, we measure $\Delta m^{2}_{32}=(2.52^{+0.20}_{-0.18})\times 10^{-3}$ eV$^{2}$ and $\sin^2\theta_{23}$ in the range 0.38-0.65, both at the 68% confidence level, with two statistically-degenerate best fit points at $\sin^2\theta_{23} = $ 0.43 and 0.60. Results for the inverted mass hierarchy are also presented.

Item Type:
Journal Article
Journal or Publication Title:
Physical Review D
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© 2016 American Physical Society
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Deposited On:
18 Feb 2016 08:54
Last Modified:
25 Sep 2020 02:19