Mutual consistency of the MINOS and MiniBooNE Antineutrino Results and Possible CPT Violation

TL;DR

This paper examines the compatibility of MINOS and MiniBooNE antineutrino results, revealing inconsistencies but also overlaps, and proposes CPT violation as a possible explanation for the observed discrepancies.

Contribution

It introduces a model of explicit CPT violation to reconcile conflicting antineutrino oscillation data from MINOS and MiniBooNE.

Findings

Significant overlap exists in allowed regions despite best fit discrepancies.

Data suggests differences in mass levels and mixing angles between neutrinos and antineutrinos.

CPT violation could account for the observed anomalies.

Abstract

Discussing the recent MINOS data on muon anti-neutrino disappearance and the MiniBooNE data on muon anti-neutrino to electron anti-neutrino oscillation, we show that the while the respective best fits are inconsistent with each other, significant overlap of allowed regions does exist. Assuming only three neutrino species, the data indicates a discrepancy of mass levels and mixing angles between the neutrino and the antineutrino sectors. We show that the existing data can be reconciled with a model of explicit CPT violation in the neutrino sector and estimate the magnitude of the required violation.