First measurement of muon-neutrino disappearance in NOvA

P Adamson, C Ader, M Andrews, N Anfimov, I Anghel… - Physical Review D, 2016 - APS
P Adamson, C Ader, M Andrews, N Anfimov, I Anghel, K Arms, E Arrieta-Diaz, A Aurisano…
Physical Review D, 2016APS
This paper reports the first measurement using the NOvA detectors of ν μ disappearance in a
ν μ beam. The analysis uses a 14 kton-equivalent exposure of 2.74× 10 20 protons-on-target
from the Fermilab NuMI beam. Assuming the normal neutrino mass hierarchy, we measure Δ
m 32 2=(2.52-0.18+ 0.20)× 10-3 eV 2 and sin 2 θ 23 in the range 0.38–0.65, both at the 68%
confidence level, with two statistically degenerate best-fit points at sin 2 θ 23= 0.43 and 0.60.
Results for the inverted mass hierarchy are also presented.
This paper reports the first measurement using the NOvA detectors of disappearance in a beam. The analysis uses a 14 kton-equivalent exposure of protons-on-target from the Fermilab NuMI beam. Assuming the normal neutrino mass hierarchy, we measure and in the range 0.38–0.65, both at the 68% confidence level, with two statistically degenerate best-fit points at and 0.60. Results for the inverted mass hierarchy are also presented.
American Physical Society