New constraints on oscillation parameters from νe appearance and νμ disappearance in the NOvA experiment
Nenhuma Miniatura disponível
Data
2018
Título da Revista
ISSN da Revista
Título de Volume
Editor
Resumo
We present updated results from the NOvA experiment for νμ → νμ and νμ → νe oscillations from an
exposure of 8.85 × 1020 protons on target, which represents an increase of 46% compared to our previous
publication. The results utilize significant improvements in both the simulations and analysis of the data. A
joint fit to the data for νμ disappearance and νe appearance gives the best-fit point as normal mass hierarchy,
Δm2
32 ¼ 2.44 × 10−3 eV2=c4, sin2 θ23 ¼ 0.56, and δCP ¼ 1.21π. The 68.3% confidence intervals in the
normal mass hierarchy are Δm2
32 ∈ ½2.37; 2.52 × 10−3 eV2=c4, sin2 θ23 ∈ ½0.43; 0.51 ∪ ½0.52; 0.60 , and
δCP ∈ ½0; 0.12π ∪ ½0.91π; 2π . The inverted mass hierarchy is disfavored at the 95% confidence level for all
choices of the other oscillation parameters.
Descrição
Palavras-chave
Citação
ACERO, M. A. et al. New constraints on oscillation parameters from νe appearance and νμ disappearance in the NOvA experiment. Physical Review D, Washington, v. 98, n. 3, e032012, 2018. DOI: 10.1103/PhysRevD.98.032012. Disponível em: https://journals.aps.org/prd/abstract/10.1103/PhysRevD.98.032012. Acesso em: 16 maio 2023.