Interference effects in reactor antineutrino oscillations
arXiv:1808.02256
Abstract
We reformulate the probabilities of disappearance neutrino or antineutrino oscillations so as to single out the interference term proportional to the product of \sin[Δm^2_{21} L/(4 E)] and \sin[(Δm^2_{31} + Δm^2_{32}) L/(4 E)], which is transparently sensitive to the neutrino mass ordering. We elaborate this issue for a reactor-based antineutrino oscillation experiment like JUNO, and take account of terrestrial matter effects. If a light sterile neutrino species contributes to P(\overlineν_e \to \overlineν_e), we find that there will be a new interference term proportional to the product of \sin^2 2θ_{14}, \sin[Δm^2_{21} L/(4 E)] and \sin[(Δm^2_{41} + Δm^2_{42}) L/ (4 E)] in the standard parametrization of the (3+1) X (3+1) active-sterile neutrino mixing matrix.
LaTeX 9 pages