First measurement of muon-neutrino disappearance in NOvA

Davies, J P, Hartnell, J, Tamsett, M C, Vinton, L, Waldron, A, Zamorano, B and Blackburn, T (2016) First measurement of muon-neutrino disappearance in NOvA. Physical Review D, 93 (5). 051104. ISSN 1550-7998

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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.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects: Q Science > QC Physics > QC0770 Nuclear and particle physics. Atomic energy. Radioactivity > QC0793 Elementary particle physics
Depositing User: Jeff Hartnell
Date Deposited: 26 Apr 2016 10:29
Last Modified: 07 Mar 2017 05:43
URI: http://sro.sussex.ac.uk/id/eprint/60622

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Project NameSussex Project NumberFunderFunder Ref
Probing Fundamental Physics with Antineutrinos at the NOvA ExperimentG0949EUROPEAN UNION307395