Compatibility of high-$\Delta \mathrm{m}^2$ $\nue$ and $\nuebar$ neutrino oscillation searches

TL;DR

This paper evaluates the compatibility of multiple neutrino oscillation experiments under a high-$ m extstyle igtriangleup m^2$ two-neutrino model, revealing limited agreement and highlighting excluded parameter regions.

Contribution

It provides a combined analysis of Bugey, KARMEN2, LSND, and MiniBooNE data within a high-$ m extstyle igtriangleup m^2$ framework, identifying the maximum compatibility and excluded regions.

Findings

LSND, KARMEN2, and MiniBooNE are 25.36% compatible.

Maximum combined compatibility is 3.94%.

Excluded regions are identified where compatibility is maximized.

Abstract

This article presents the compatibility of experimental data from neutrino oscillation experiments with a high-$\dmsq$ two-neutrino oscillation hypothesis. Data is provided by the Bugey, Karlsruhe Rutherford Medium Energy Neutrino Experiment 2 (KARMEN2), Los Alamos Liquid Scintillator Neutrino Detector (LSND), and MiniBooNE experiments. The LSND, KARMEN2, and MiniBooNE results are 25.36% compatible within a two-neutrino oscillation hypothesis. However, the point of maximal compatibility is found in a region that is excluded by the Bugey data. A joint analysis of all four experiments, performed in the $\sinsqtheta \mathrm{vs} \dmsq$ region common to all data, finds a maximal compatibility of 3.94%. This result does not account for additions to the neutrino oscillation model from sources such as CP violation or sterile neutrinos.