A search for muon neutrino and antineutrino disappearance in MiniBooNE

TL;DR

This paper reports a search for muon neutrino and antineutrino disappearance in the MiniBooNE experiment, finding no evidence for disappearance in the specified mass-squared difference range, thus constraining models with extra neutrinos or CPT violation.

Contribution

First test of muon antineutrino disappearance in the 0.1-10 eV^2 range using MiniBooNE data, providing new constraints on neutrino oscillation models.

Findings

No evidence for muon neutrino disappearance at 90% CL.

No evidence for muon antineutrino disappearance at 90% CL.

Constraints on models with extra neutrinos, extra dimensions, and CPT violation.

Abstract

The MiniBooNE Collaboration reports a search for \numu and \numubar disappearance in the \dmsq region of a few \evsq. These measurements are important for constraining models with extra types of neutrinos, extra dimensions an d CPT violation. Fits to the shape of the \numu and \numubar energy spectra reveal no evidence for disappearance at 90% confidence level (CL) in either mode. This is the first test of \numubar disappearance between \dmsq=0.1-10\evsq.