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

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arxiv 2206.07100 v3 pith:2EEELPRL submitted 2022-06-14 hep-ph hep-ex

Nicholas W. Kamp , Matheus Hostert , Austin Schneider , Stefano Vergani , Carlos A. Argüelles , Janet M. Conrad , Michael H. Shaevitz , Melissa A. Uchida This is my paper · ORCID
classification hep-phhep-ex
keywords minervaminiboonemodelanalysisconstraintsdataexcessexplanations
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abstract

We revisit models of heavy neutral leptons (neutrissimos) with transition magnetic moments as explanations of the $4.8\sigma$ 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 $2\sigma$ confidence level. A dedicated MINERvA analysis would likely be able to probe the entire region of preference of MiniBooNE in this model.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Enhanced active-sterile neutrino polarizability at the intensity frontier

    hep-ph 2025-12 conditional novelty 7.0 of 10

    A new neutrino-photon interaction involving a sterile neutrino is constrained at NOMAD and MiniBooNE, and a light-mediator realization can fit the MiniBooNE excess.

  2. Dirt/Detector/Dump: Complementary BSM production at Short-Baseline Neutrino Facilities

    hep-ph 2025-01 conditional novelty 6.0 of 10

    Dump-produced heavy neutral leptons contribute substantially to short-baseline neutrino detector signals and can be separated from dirt and detector production by energy, angle, and timing.

  3. Constraints and Sensitivities for Dipole-Portal Heavy Neutral Leptons from ND280 and its Upgrade

    hep-ph 2024-12 conditional novelty 6.0 of 10

    ND280 data, recast through a detailed Monte Carlo simulation, set new world-leading limits on dipole-portal heavy neutral leptons and disfavor them as the MiniBooNE anomaly explanation.

  4. Probing conventional and new physics at the ESS with coherent elastic neutrino-nucleus scattering

    hep-ph 2025-01 conditional novelty 5.0 of 10

    Projected ESS CEνNS measurements would improve current constraints on the weak mixing angle, nuclear neutron radii, and several new physics scenarios by large factors, and would lead in some unexplored mass ranges.

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