Update of Short-Baseline Electron Neutrino and Antineutrino Disappearance

TL;DR

This paper provides an updated analysis of short-baseline electron neutrino and antineutrino disappearance experiments within a 3+1 neutrino mixing framework, incorporating recent experimental data and discussing implications for neutrino physics.

Contribution

It offers a comprehensive update on neutrino disappearance data analysis, integrating recent measurements and exploring their implications for sterile neutrino models and related experiments.

Findings

Updated constraints on active-sterile neutrino mixing parameters.

Implications for beta-decay and neutrinoless double-beta decay experiments.

Analysis of recent Gallium and reactor anomaly data.

Abstract

We present a complete update of the analysis of electron neutrino and antineutrino disappearance experiments in terms of neutrino oscillations in the framework of 3+1 neutrino mixing, taking into account the Gallium anomaly, the reactor anomaly, solar neutrino data and nu_e-C scattering data. We discuss the implications of a recent 71Ga(3He,3H)71Ge measurement which give information on the neutrino cross section in Gallium experiments. We discuss the solar bound on active-sterile mixing and present our numerical results. We discuss the connection between the results of the fit of neutrino oscillation data and the heavy neutrino mass effects in beta-decay experiments (considering new Mainz data) and neutrinoless double-beta decay experiments (considering the recent EXO results).