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Dipole-Coupled Neutrissimo Explanations of the MiniBooNE Excess Including Constraints from MINERvA Data
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Dipole-Coupled Neutrissimo Explanations of the MiniBooNE Excess Including Constraints from MINERvA Data

Nicholas W Kamp, Matheus Hostert, Austin Schneider, Stefano Vergani, Carlos A Argüelles, Janet M Conrad, Michael H Shaevitz and Melissa A Uchida
ArXiv.org
Cornell University
03/02/2023
DOI: 10.48550/arxiv.2206.07100
url
https://doi.org/10.48550/arxiv.2206.07100View
Preprint (Author's original)This preprint has not been evaluated by subject experts through peer review. Preprints may undergo extensive changes and/or become peer-reviewed journal articles. Open Access

Abstract

We revisit models of heavy neutral leptons (neutrissimos) with transition magnetic moments as explanations of the excess of electron-like events at MiniBooNE. We perform a detailed Monte Carlo-based analysis to re-examine the preferred regions in the model parameter space to explain MiniBooNE, considering also potential contributions from oscillations due to an eV-scale sterile neutrino. We then derive robust constraints on the model using neutrino-electron elastic scattering data from MINERvA. We find that MINERvA rules out a large region of parameter space, but allowed solutions exist at the confidence level. A dedicated MINERvA analysis would likely be able to probe the entire region of preference of MiniBooNE in this model.
Physics - High Energy Physics - Experiment Physics - High Energy Physics - Phenomenology

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