First measurement of muon-neutrino disappearance in NOvA

Collaboration
Jan 19, 2016
8 pages
Published in:
  • Phys.Rev.D 93 (2016) 5, 051104
  • Published: Mar 25, 2016
e-Print:
Report number:
  • FERMILAB-PUB-16-007-ND
Experiments:

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Abstract: (APS)
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 Δm322=(2.52-0.18+0.20)×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.
Note:
  • 8 pages, 6 figures. Submitted to Phys. Rev. D Rapid Communications
  • neutrino: oscillation
  • neutrino/mu: beam
  • neutrino: mixing angle
  • neutrino: mass difference
  • neutrino: mass: hierarchy
  • NOvA
  • 4/3
  • experimental results