Thermal WIMPs and the scale of new physics: global fits of Dirac dark matter effective field theories
Authors
Athron, P
Kozar, NA
Balázs, C
Bloor, S
Bringmann, T
Brod, J
Chang, C
Cornell, JM
Farmer, B
Fowlie, A
Gonzalo, TE
Handley, W
Kahlhoefer, F
Kvellestad, A
Mahmoudi, F
Prim, MT
Raklev, A
Renk, JJ
Scaffidi, A
Scott, P
Stöcker, P
Vincent, AC
White, M
Wild, S
Zupan, J
Publication Date
2021Journal Title
European Physical Journal C
ISSN
1434-6044
Publisher
Springer Science and Business Media LLC
Volume
81
Issue
11
Language
en
Type
Article
This Version
VoR
Metadata
Show full item recordCitation
Athron, P., Kozar, N., Balázs, C., Beniwal, A., Bloor, S., Bringmann, T., Brod, J., et al. (2021). Thermal WIMPs and the scale of new physics: global fits of Dirac dark matter effective field theories. European Physical Journal C, 81 (11) https://doi.org/10.1140/epjc/s10052-021-09712-6
Abstract
We assess the status of a wide class of WIMP dark matter (DM) models in light
of the latest experimental results using the global fitting framework
$\textsf{GAMBIT}$. We perform a global analysis of effective field theory (EFT)
operators describing the interactions between a gauge-singlet Dirac fermion and
the Standard Model quarks, the gluons and the photon. In this bottom-up
approach, we simultaneously vary the coefficients of 14 such operators up to
dimension 7, along with the DM mass, the scale of new physics and several
nuisance parameters. Our likelihood functions include the latest data from
$\mathit{Planck}$, direct and indirect detection experiments, and the LHC. For
DM masses below 100 GeV, we find that it is impossible to satisfy all
constraints simultaneously while maintaining EFT validity at LHC energies. For
new physics scales around 1 TeV, our results are influenced by several small
excesses in the LHC data and depend on the prescription that we adopt to ensure
EFT validity. Furthermore, we find large regions of viable parameter space
where the EFT is valid and the relic density can be reproduced, implying that
WIMPs can still account for the DM of the universe while being consistent with
the latest data.
Keywords
hep-ph, hep-ph, astro-ph.CO
Sponsorship
Australian Research Council (DP180102209)
Identifiers
s10052-021-09712-6, 9712
External DOI: https://doi.org/10.1140/epjc/s10052-021-09712-6
This record's URL: https://www.repository.cam.ac.uk/handle/1810/332083
Rights
Licence:
http://creativecommons.org/licenses/by/4.0/
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