Global fits of GUT-scale SUSY models with GAMBIT

Athron, P. et al. (2017) Global fits of GUT-scale SUSY models with GAMBIT. European Physical Journal C, 77(12), 824. (doi:10.1140/epjc/s10052-017-5167-0)

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Abstract

AbstractWe 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 dark matter in all three models, 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.

Item Type:Articles
Keywords:Regular Article - Theoretical Physics
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Buckley, Dr Andy
Authors: Athron, P., Balázs, C., Bringmann, T., Buckley, A., Chrząszcz, M., Conrad, J., Cornell, J. M., Dal, L. A., Edsjö, J., Farmer, B., Jackson, P., Krislock, A., Kvellestad, A., Mahmoudi, F., Martinez, G. D., Putze, A., Raklev, A., Rogan, C., de Austri, R. R., Saavedra, A., Savage, C., Scott, P., Serra, N., Weniger, C., and White, M.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:European Physical Journal C
Publisher:Springer
ISSN:1434-6044
ISSN (Online):1434-6052
Published Online:04 December 2017
Copyright Holders:Copyright © 2017 The Authors
First Published:First published in European Physical Journal C 77(12):824
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
645361Jet substructure and new physics studies with the ATLAS experimentAndrew BuckleyThe Royal Society (ROYSOC)UF110191SCHOOL OF PHYSICS & ASTRONOMY