https://doi.org/10.1140/epjc/s10052-017-5196-8
Regular Article - Theoretical Physics
A global fit of the MSSM with GAMBIT
1
School of Physics and Astronomy, Monash University, Melbourne, VIC, 3800, Australia
2
Australian Research Council Centre of Excellence for Particle Physics at the Tera-scale, Australia, http://www.coepp.org.au/
3
Department of Physics, University of Oslo, 0316, Oslo, Norway
4
SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, UK
5
Physik-Institut, Universität Zürich, Winterthurerstrasse 190, 8057, Zurich, Switzerland
6
H. Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, 31-342, Kraków, Poland
7
Oskar Klein Centre for Cosmoparticle Physics, AlbaNova University Centre, 10691, Stockholm, Sweden
8
Department of Physics, Stockholm University, 10691, Stockholm, Sweden
9
Department of Physics, McGill University, 3600 rue University, Montreal, QC, H3A 2T8, Canada
10
Department of Physics, University of Adelaide, Adelaide, SA, 5005, Australia
11
NORDITA, Roslagstullsbacken 23, 10691, Stockholm, Sweden
12
Univ Lyon, Univ Lyon 1, ENS de Lyon, CNRS, Centre de Recherche Astrophysique de Lyon UMR5574, 69230, Saint-Genis-Laval, France
13
Theoretical Physics Department, CERN, 1211, Geneva 23, Switzerland
14
Physics and Astronomy Department, University of California, Los Angeles, CA, 90095, USA
15
LAPTh, Université de Savoie, CNRS, 9 chemin de Bellevue B.P.110, 74941, Annecy-le-Vieux, France
16
Department of Physics, Harvard University, Cambridge, MA, 02138, USA
17
Centre for Translational Data Science, Faculty of Engineering and Information Technologies, School of Physics, The University of Sydney, Sydney, NSW, 2006, Australia
18
Department of Physics, Blackett Laboratory, Imperial College London, Prince Consort Road, London, SW7 2AZ, UK
19
GRAPPA, Institute of Physics, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands
* e-mail: anders.kvellestad@nordita.org
Received:
22
May
2017
Accepted:
4
September
2017
Published online:
18
December
2017
We study the seven-dimensional Minimal Supersymmetric Standard Model (MSSM7) with the new GAMBIT software framework, with all parameters defined at the weak scale. Our analysis significantly extends previous weak-scale, phenomenological MSSM fits, by adding more and newer experimental analyses, improving the accuracy and detail of theoretical predictions, including dominant uncertainties from the Standard Model, the Galactic dark matter halo and the quark content of the nucleon, and employing novel and highly-efficient statistical sampling methods to scan the parameter space. We find regions of the MSSM7 that exhibit co-annihilation of neutralinos with charginos, stops and sbottoms, as well as models that undergo resonant annihilation via both light and heavy Higgs funnels. We find high-likelihood models with light charginos, stops and sbottoms that have the potential to be within the future reach of the LHC. Large parts of our preferred parameter regions will also be accessible to the next generation of direct and indirect dark matter searches, making prospects for discovery in the near future rather good.
© The Author(s), 2017