P, Adamson and Giri, Anjan Kumar and et al, .
(2016)
First measurement of muon-neutrino disappearance in NOvA.
Physical Review D - Particles, Fields, Gravitation and Cosmology, 93 (5).
051104(R).
ISSN 1550-7998
Abstract
This paper reports the first measurement using the NOvA detectors of νμ disappearance in a νμ beam. The analysis uses a 14 kton-equivalent exposure of 2.74×1020 protons-on-target from the Fermilab NuMI beam. Assuming the normal neutrino mass hierarchy, we measure Δm232=(2.52+0.20−0.18)×10−3 eV2 and sin2θ23 in the range 0.38–0.65, both at the 68% confidence level, with two statistically degenerate best-fit points at sin2θ23=0.43 and 0.60. Results for the inverted mass hierarchy are also presented.
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