Impact of vacuum stability, perturbativity and XENON1T on global fits of Z(2) and Z(3) scalar singlet dark matter
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
Scalar singlet dark matter is one of the simplest and most predictive realisations of the WIMP (weakly-interacting massive particle) idea. Although the model is constrained from all directions by the latest experimental data, it still has viable regions of parameter space. Another compelling aspect of scalar singlets is their ability to stabilise the electroweak vacuum. Indeed, models of scalar dark matter are not low-energy effective theories, but can be valid all the way to the Planck scale. Using the GAMBIT framework, we present the first global fit to include both the low-energy experimental constraints and the theoretical constraints from UV physics, considering models with a scalar singlet charged under either a Z2 or a Z3 symmetry. We show that if the model is to satisfy all experimental constraints, completely stabilise the electroweak vacuum up to high scales, and also remain perturbative to those scales, one is driven to a relatively small region of parameter space. This region has a Higgs-portal coupling slightly less than 1, a dark matter mass of 1–2 TeV and a spin-independent nuclear scattering cross-section around 10−45cm2 .
Date Issued
2018-10-16
Date Acceptance
2018-10-06
Citation
European Physical Journal C: Particles and Fields, 2018, 78 (10)
ISSN
1434-6044
Publisher
Springer
Journal / Book Title
European Physical Journal C: Particles and Fields
Volume
78
Issue
10
Copyright Statement
© The Author(s) 2018. This article is distributed under the terms of the Creative
Commons Attribution 4.0 International License (http://creativecomm
ons.org/licenses/by/4.0/), which permits unrestricted use, distribution,
and reproduction in any medium, provided you give appropriate credit
to the original author(s) and the source, provide a link to the Creative
Commons license, and indicate if changes were made.
Funded by SCOAP3.
Commons Attribution 4.0 International License (http://creativecomm
ons.org/licenses/by/4.0/), which permits unrestricted use, distribution,
and reproduction in any medium, provided you give appropriate credit
to the original author(s) and the source, provide a link to the Creative
Commons license, and indicate if changes were made.
Funded by SCOAP3.
Sponsor
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council (STFC)
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000447535000001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Grant Number
ST/K00414X/1
ST-N000838
ST/N000838/1
ST/P000762/1
Subjects
Science & Technology
Physical Sciences
Physics, Particles & Fields
Physics
MODEL
SUSY
(MS)OVER-BAR
EXTENSIONS
PROGRAM
MASS
Publication Status
Published
Article Number
830
Date Publish Online
2018-10-16