Dark Sector as Origin of Light Lepton Mass and Its Phenomenology
Journal
JOURNAL OF HIGH ENERGY PHYSICS
Journal Volume
2022
Journal Issue
5
Date Issued
2022-02-16
Author(s)
Abstract
We discuss a model with a dark sector, in which smallness of mass for charged
leptons and neutrinos can naturally be explained by one-loop effects mediated
by particles in the dark sector. These new particles, including dark matter
candidates, also contribute to the anomalous magnetic dipole moment, denoted by
$(g-2)$, for charged leptons. We show that our model can explain the muon
$(g-2)$ anomaly and observed neutrino oscillations under the constraints from
lepton flavor violating decays of charged leptons. We illustrate that the
scenario with scalar dark matter is highly constrained by direct searches at
the LHC, while that with fermionic dark matter allows for considering dark
scalars with masses of order 100 GeV. Our scenario can be tested by a precise
measurement of the muon Yukawa coupling as well as the direct production of
dark scalar bosons at future electron-positron colliders.
Subjects
Theories of Flavour; Dark Matter at Colliders; Vector-Like Fermions; High Energy Physics - Phenomenology; High Energy Physics - Phenomenology
Publisher
SPRINGER
Description
Version accepted for publication in JHEP
Type
journal article