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)

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, Professor 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