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A dark seesaw solution to low energy anomalies: MiniBooNE, the muon (g − 2), and BaBar

Abdullahi, Asli and Hostert, Matheus and Pascoli, Silvia (2021) 'A dark seesaw solution to low energy anomalies: MiniBooNE, the muon (g − 2), and BaBar.', Physics Letters B, 820 .

Abstract

A recent update from MiniBooNE has strengthened the observed 4.8σexcess of e-like events. Motivated by this and other notable deviations from standard model predictions, such as the muon (g−2), we propose a solution to low energy anomalies through a dark neutrino sector. The model is renormalizable and can also explain light neutrino masses with an anomaly-free and dark U(1)′gauge symmetry broken at the GeV scale. Large kinetic mixing leads to s-channel production of heavy neutral leptons at e+e−colliders, where we point out and explain a 2σexcess observed in the BaBar monophoton data. Our model is also compatible with anomalous e-like events seen at old accelerator experiments, as well as with an excess of double vertex signatures observed at CCFR.©2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license

Item Type:Article
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Available under License - Creative Commons Attribution 4.0.
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Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1016/j.physletb.2021.136531
Publisher statement:This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
Date accepted:19 July 2021
Date deposited:15 November 2021
Date of first online publication:22 July 2021
Date first made open access:15 November 2021

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