Strong electroweak phase transition in t-channel simplified dark matter models
Jul 25, 2022
54 pages
Published in:
- JCAP 10 (2022) 044,
- JCAP 10 (2022) 044
- Published: Oct 13, 2022
e-Print:
- 2207.12207 [hep-ph]
Report number:
- HIP-2022-19/TH,
- NORDITA 2022-050
View in:
Citations per year
Abstract: (IOP)
Beyond the Standard Model physics is required to explain both
dark matter and
the baryon asymmetry of the universe,
the latter possibly generated during a strong first-order electroweak phase transition.
While many proposed models tackle these problems
independently,
it is interesting to inquire whether the same model can explain both.
In this context,
we link state-of-the-art perturbative assessments of
the phase transition thermodynamics with
the extraction of the dark matter energy density.
These techniques are applied to
a next-to-minimal dark matter model containing
an inert
Majorana fermion that is coupled to
Standard Model leptons via
a scalar mediator,
where the mediator interacts directly with the Higgs boson.
For dark matter masses
180 GeV < M
≲ 300 GeV,
we discern regions of the model parameter space that reproduce
the observed dark matter energy density and
allow for a first-order phase transition, while evading the most stringent collider constraints.Note:
- 54 pages, 12 figures, 1 table; v2: Journal version, extended section 3.2
- cosmological phase transitions
- cosmology of theories beyond the SM
- dark matter theory
- physics of the early universe
- baryon: asymmetry
- effective potential
- electroweak interaction: critical phenomena
- thermodynamics: critical phenomena
- dark matter: freeze-out
- dark matter: relic density
References(156)
Figures(15)
- [1]
- [2]
- [3]
- [4]
- [6]
- [7]
- [8]
- [9]
- [10]
- [11]
- [12]
- [13]
- [14]
- [15]
- [16]
- [17]
- [18]
- [19]
- [20]
- [21]
- [22]
- [23]
- [24]
- [25]