A global fit of the MSSM with GAMBIT

Athron, P. et al. (2017) A global fit of the MSSM with GAMBIT. European Physical Journal C, 77(12), 879. (doi: 10.1140/epjc/s10052-017-5196-8)

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Abstract

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.

Item Type:Articles
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., 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:18 December 2017
Copyright Holders:Copyright © 2017 The Authors
First Published:First published in European Physical Journal C 77(12): 879
Publisher Policy:Reproduced under a Creative Commons License

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