Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/110870
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Type: | Journal article |
Title: | Status of the scalar singlet dark matter model |
Author: | Athron, P. Balázs, C. Bringmann, T. Buckley, A. Chrząszcz, M. Conrad, J. Cornell, J. Dal, L. Edsjö, J. Farmer, B. Jackson, P. Kahlhoefer, F. Krislock, A. Kvellestad, A. McKay, J. Mahmoudi, F. Martinez, G. Putze, A. Raklev, A. Rogan, C. et al. |
Citation: | European Physical Journal C: Particles and Fields, 2017; 77(8):568-1-568-17 |
Publisher: | Springer |
Issue Date: | 2017 |
ISSN: | 1434-6044 1434-6052 |
Statement of Responsibility: | Peter Athron, Csaba Balázs, Torsten Bringmann, Andy Buckley, Marcin Chrząszcz, Jan Conrad, Jonathan M. Cornell, Lars A. Dal, Joakim Edsjö, Ben Farmer, Paul Jackson, Felix Kahlhoefer, Abram Krislock, Anders Kvellestad, James McKay, Farvah Mahmoudi, Gregory D. Martinez, Antje Putze, Are Raklev, Christopher Rogan, Aldo Saavedra, Christopher Savage, Pat Scott, Nicola Serra, Christoph Weniger, Martin White (The GAMBIT Collaboration). |
Abstract: | One of the simplest viable models for dark matter is an additional neutral scalar, stabilised by a Z₂ symmetry. Using the GAMBIT package and combining results from four independent samplers, we present Bayesian and frequentist global fits of this model. We vary the singlet mass and coupling along with 13 nuisance parameters, including nuclear uncertainties relevant for direct detection, the local dark matter density, and selected quark masses and couplings. We include the dark matter relic density measured by Planck, direct searches with LUX, PandaX, SuperCDMS and XENON100, limits on invisible Higgs decays from the Large Hadron Collider, searches for high-energy neutrinos from dark matter annihilation in the Sun with IceCube, and searches for gamma rays from annihilation in dwarf galaxies with the Fermi-LAT. Viable solutions remain at couplings of order unity, for singlet masses between the Higgs mass and about 300 GeV, and at masses above ∼1 TeV. Only in the latter case can the scalar singlet constitute all of dark matter. Frequentist analysis shows that the low-mass resonance region, where the singlet is about half the mass of the Higgs, can also account for all of dark matter, and remains viable. However, Bayesian considerations show this region to be rather fine-tuned. |
Keywords: | GAMBIT Collaboration: |
Rights: | © The Author(s) 2017. This article is an open access publication 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. |
DOI: | 10.1140/epjc/s10052-017-5113-1 |
Grant ID: | http://purl.org/au-research/grants/arc/CE1101004 http://purl.org/au-research/grants/arc/FT130100018 http://purl.org/au-research/grants/arc/FT140100244 http://purl.org/au-research/grants/arc/FT160100274 |
Published version: | http://dx.doi.org/10.1140/epjc/s10052-017-5113-1 |
Appears in Collections: | Aurora harvest 8 Chemical Engineering publications |
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hdl_110870.pdf | Published Version | 1.89 MB | Adobe PDF | View/Open |
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