"Constraints on Oscillation Parameters from nu(e) Appearance and nu(mu)" by P. Adamson, J. Liu et al.
 

Document Type

Article

Department/Program

Physics

Journal Title

PHYSICAL REVIEW LETTERS

Pub Date

6-5-2017

Volume

118

Issue

23

Abstract

Results are reported from an improved measurement of nu(mu) -> nu(e) transitions by the NOvA experiment. Using an exposure equivalent to 6.05 x 10(20) protons on target, 33 nu(e) candidates are observed with a background of 8.2 +/- 0.8 (syst.). Combined with the latest NOvA nu(mu) disappearance data and external constraints from reactor experiments on sin(2) 2 theta(13), the hypothesis of inverted mass hierarchy with theta(23) in the lower octant is disfavored at greater than 93% C.L. for all values of delta(CP).

DOI

10.1103/PhysRevLett.118.231801

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