Flux-mediated Dark Matter

We propose a new mechanism to communicate between fermion dark matter and the Standard Model (SM) only through the four-form flux. The four-form couplings are responsible for the relaxation of the Higgs mass to the correct value and the initial displacement of the reheating pseudo-scalar field from...

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Bibliographic Details
Published in:arXiv.org 2021-06
Main Authors: Yoo-Jin, Kang, Lee, Hyun Min, Menkara, Adriana G, Song, Jiseon
Format: Article
Language:English
Subjects:
Couplings
Dark matter
Fermions
Flux
Heating
Scalars
Online Access:Get full text
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Summary:We propose a new mechanism to communicate between fermion dark matter and the Standard Model (SM) only through the four-form flux. The four-form couplings are responsible for the relaxation of the Higgs mass to the correct value and the initial displacement of the reheating pseudo-scalar field from the minimum. We show that the simultaneous presence of the pseudo-scalar coupling to fermion dark matter and the flux-induced Higgs mixing gives rise to unsuppressed annihilations of dark matter into the SM particles at present, whereas the direct detection bounds from XENON1T can be avoided. We suggest exploring the interesting bulk parameter space of the model for which dark matter annihilates dominantly into a pair of singlet-like scalars with similar mass as for dark matter.
ISSN:2331-8422
DOI:10.48550/arxiv.2103.07592