Abstract
We show that the canonical seesaw mechanism implemented by the gauge symmetry provides two-component dark matter naturally. The seesaw scale that breaks defines a residual gauge symmetry to be , where leads to the usual matter parity, while is newly recognized, transforming quark fields nontrivially. The dark matter components—that transform nontrivially under the matter parity and , respectively—can gain arbitrary masses, despite the fact that the dark matter may be heavier than the light quarks , . This dark matter setup can address the XENON1T anomaly recently observed and other observables, given that the dark matter masses are nearly degenerate, heavier than the electron and the gauge boson , as well as the fast-moving dark matter has a large charge, while the is viably below the beam dump experiment sensitive regime.
- Received 18 July 2020
- Accepted 29 April 2021
DOI:https://doi.org/10.1103/PhysRevD.103.095016
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
Published by the American Physical Society