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

Abdullahi, Asli; Hostert, Matheus; Pascoli, Silvia

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

Citation

Abdullahi, A., Hostert, M., & Pascoli, S. (2021). A dark seesaw solution to low energy anomalies: MiniBooNE, the muon (g − 2), and BaBar. Physics Letters B, 820, https://doi.org/10.1016/j.physletb.2021.136531

• Journal Article Type: Article
• Acceptance Date: Jul 19, 2021
• Online Publication Date: Jul 22, 2021
• Publication Date: 2021
• Deposit Date: Nov 15, 2021
• Publicly Available Date: Nov 15, 2021
• Journal: Physics Letters B
• Print ISSN: 0370-2693
• Electronic ISSN: 1873-2445
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 820
• DOI: https://doi.org/10.1016/j.physletb.2021.136531
• Public URL: https://durham-repository.worktribe.com/output/1222012