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

Abdullahi, Asli; Hostert, Matheus; Pascoli, Silvia

doi:10.1016/j.physletb.2021.136531

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

Abdullahi, Asli; Hostert, Matheus; Pascoli, Silvia

Authors

Asli Abdullahi asli.abdullahi@durham.ac.uk
PGR Student Doctor of Philosophy

Matheus Hostert

Silvia Pascoli

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
Publisher	Elsevier
Peer Reviewed	Peer Reviewed
Volume	820
DOI	https://doi.org/10.1016/j.physletb.2021.136531