Constraints on Oscillation Parameters fromνeAppearance andνμDisappearance in NOvA

2017/03/31 by The NOvA Collaboration, P. Adamson, L. Aliaga +199 · 146 citations
Physics and Astronomy · #Biology #Dark Matter and Cosmic Phenomena #Neutrino Physics Research #Octant (instrument) #Optics #Oscillation (cell signaling) #Particle physics theoretical and experimental studies #Physics #hep-ex

paper · pdf · doi:10.1103/physrevlett.118.231801

published in Physical Review Letters 118(23), 231801 (American Physical Society) · 6 pages, 4 figures

openalex created_date 2017/03/23 · arxiv created 2017/05/24 · openalex publication_date 2017/06/05 · arxiv updated 2017/06/15 · openalex updated_date 2026/08/05

Abstract

Results are reported from an improved measurement of ν_μ→ν_e transitions by the NOvA experiment. Using an exposure equivalent to 6.05×10²⁰ protons on target, 33 ν_e candidates are observed with a background of 8.2±0.8 (syst.). Combined with the latest NOvA ν_μ disappearance data and external constraints from reactor experiments on sin²2θ₁₃, the hypothesis of inverted mass hierarchy with θ₂₃ in the lower octant is disfavored at greater than 93% C.L. for all values of δ_CP.

Citations

• Learning representations by back-propagating errors
• The GENIE neutrino Monte Carlo generator
• Geant4 developments and applications
• Big-Bang Nucleosynthesis
• The GENIE Neutrino Monte Carlo Generator: Physics and User Manual

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