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Title: First measurement of muon-neutrino disappearance in NOvA

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.
Authors:
 [1]
  1. et al.
Publication Date:
OSTI Identifier:
1244488
Report Number(s):
FERMILAB-PUB--16-007-ND; arXiv:1601.05037
Journal ID: ISSN 2470-0010; PRVDAQ; 1415953
Grant/Contract Number:
AC02-07CH11359
Type:
Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 93; Journal Issue: 5; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Research Org:
Argonne National Laboratory (ANL), Argonne, IL (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Orgs:
NOvA Collaboration
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS