Should we still believe in constrained supersymmetry?

Csaba Balázs, Andy Buckley, Daniel Carter, Benjamin Joseph Farmer, Martin White

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review


We calculate partial Bayes factors to quantify how the feasibility of the constrained minimal supersymmetric standard model (CMSSM) has changed in the light of a series of observations. We take as “training” data the approximate knowledge that was available before LEP, and take our comparison model to be the Standard Model with a simple dark matter candidate. Partial Bayes factors are then computed, using as inference data the LEP2 Higgs constraints, 2011 XENON100 dark matter constraints, 2011 LHC supersymmetry search results, and the early 2012 LHC Higgs search results. We find that LEP and the LHC strongly shatter our trust in the CMSSM, reducing its posterior odds by a factor of approximately two orders of magnitude. This conclusion is robust under variation of priors, but may be avoided if the CMSSM is not required to explain the (g−2) µ anomaly.

Original languageEnglish
Title of host publicationProceedings
Publication statusPublished - 1 Jan 2012
EventInternational Workshop on the Dark Side of The Universe (DSU) 2012 - Buzios, Rio de Janeiro, Brazil
Duration: 10 Jun 201215 Jun 2012
Conference number: 8th

Publication series

NameProceedings of Science
PublisherScuola Internazionale Superiore di Studi Avanzati (S I S S A)
ISSN (Print)1824-8039


ConferenceInternational Workshop on the Dark Side of The Universe (DSU) 2012
CityBuzios, Rio de Janeiro


  • Standard model (particle physics)
  • Gaugino masses
  • Mass

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