Updated MiniBooNE Neutrino Oscillation Results with Increased Data and New Background Studies

Abstract

The MiniBooNE experiment at Fermilab reports a total excess of $638.0\pm 132.8$ electron-like events ($4.8\sigma$) from a data sample corresponding to $18.75\times 10^{20}$ protons-on-target in neutrino mode, which is a 46\% increase in the data sample with respect to previously published results, and $11.27\times 10^{20}$ protons-on-target in antineutrino mode. The additional statistics allow several studies to address questions on the source of the excess. First, we provide two-dimensional plots in visible energy and cosine of the angle of the outgoing lepton, which can provide valuable input to models for the event excess. Second, we test whether the excess may arise from photons that enter the detector from external events or photons exiting the detector from ${\pi }^0$ decays in two model independent ways. Beam timing information shows that almost all of the excess is in time with neutrinos that interact in the detector. The radius distribution shows that the excess is distributed throughout the volume, while tighter cuts on the fiducal volume increase the significance of the excess. We conclude that models of the event excess based on entering and exiting photons are disfavored.

28 pages, 26 figures

References in corpus (17)

• First Measurement of the Muon Neutrino Charged Current Quasielastic Double Differential Cross Section
• Global three-parameter model for neutrino oscillations using Lorentz violation
• $C_5^A$ axial form factor from bubble chamber experiments
• Anomaly mediated neutrino-photon interactions at finite baryon density
• Explaining $(g-2{)}_{\mu ,e}$, the KOTO anomaly and the MiniBooNE excess in an extended Higgs model with sterile neutrinos
• First Observation of Coherent ${\pi }^0$ Production in Neutrino Nucleus Interactions with $E_{\nu }<$ 2 GeV
• First Constraints on the Complete Neutrino Mixing Matrix with a Sterile Neutrino
• Neutrinos in Large Extra Dimensions and Short-Baseline ${\nu }_e$ Appearance
• Understanding the MiniBooNE and the muon and electron $g-2$ anomalies with a light $Z^{\prime }$ and a second Higgs doublet
• Dark sector origin of the KOTO and MiniBooNE anomalies
• Neutrinoproduction of Photons and Pions From Nucleons in a Chiral Effective Field Theory for Nuclei
• On the single photon background to nu_e appearance at MiniBooNE
• Single photon events from neutral current interactions at MiniBooNE
• Can neutrino-induced photon production explain the low energy excess in MiniBooNE?
• Coherent Neutrinoproduction of Photons and Pions in a Chiral Effective Field Theory for Nuclei
• Incoherent Neutrinoproduction of Photons and Pions in a Chiral Effective Field Theory for Nuclei
• Some Radiative Corrections to Neutrino Scattering: I Neutral Currents

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