Updated result from electron antineutrino appearance in T2K
We submitted on the arxiv the updated results from the long-baseline oscillation studies of electron antineutrino appearance.
We observe 15 candidate electron antineutrino events with a background expectation of 9.3 events. Including information from the kinematic distribution of observed events, the hypothesis of no electron antineutrino appearance is disfavored with a significance of 2.40sigma and no discrepancy between data and PMNS predictions is found.
The preprint can be found external page here
Bi-probability credible interval comparison between the standard fit constrained by the PMNS (light blue) model and the non-PMNS fit with the free β parameterization (dark blue).