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Global fits of GUT-scale SUSY models with GAMBIT
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Number of Authors: 25
2017 (English)In: European Physical Journal C, ISSN 1434-6044, E-ISSN 1434-6052, Vol. 77, no 12, 824Article in journal (Refereed) Published
Abstract [en]

We present the most comprehensive global fits to date of three supersymmetric models motivated by grand unification: the Constrained Minimal Supersymmetric Standard Model (CMSSM), and its Non-Universal Higgs Mass generalisations NUHM1 and NUHM2. We include likelihoods from a number of direct and indirect dark matter searches, a large collection of electroweak precision and flavour observables, direct searches for supersymmetry at LEP and Runs I and II of the LHC, and constraints from Higgs observables. Our analysis improves on existing results not only in terms of the number of included observables, but also in the level of detail with which we treat them, our sampling techniques for scanning the parameter space, and our treatment of nuisance parameters. We show that stau co-annihilation is now ruled out in the CMSSM at more than 95% confidence. Stop co-annihilation turns out to be one of the most promising mechanisms for achieving an appropriate relic density of darkmatter in all threemodels, whilst avoiding all other constraints. We find high-likelihood regions of parameter space featuring light stops and charginos, making them potentially detectable in the near future at the LHC. We also show that tonne-scale direct detection will play a largely complementary role, probing large parts of the remaining viable parameter space, including essentially all models with multi-TeV neutralinos.

Place, publisher, year, edition, pages
2017. Vol. 77, no 12, 824
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-150924DOI: 10.1140/epjc/s10052-017-5167-0ISI: 000417103000001OAI: oai:DiVA.org:su-150924DiVA: diva2:1172168
Available from: 2018-01-09 Created: 2018-01-09 Last updated: 2018-01-09Bibliographically approved

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Athron, PeterConrad, JanEdsjö, JoakimFarmer, Ben
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Department of PhysicsThe Oskar Klein Centre for Cosmo Particle Physics (OKC)
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