Should we still believe in constrained supersymmetry?

Csaba Balazs, Andy Buckley, Daniel Carter, Benjamin 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 of Science
    Subtitle of host publication36th International Conference on High Energy Physics
    PublisherSissa Medialab, SRL
    Publication statusPublished - 22 Aug 2013
    EventInternational Conference on High Energy Physics, ICHEP 2012 - Melbourne, Australia
    Duration: 4 Jul 201211 Jul 2012
    Conference number: 36th

    Publication series

    NameProceedings of Science
    PublisherSissa Medialab srl
    ISSN (Print)1824-8039


    ConferenceInternational Conference on High Energy Physics, ICHEP 2012
    Abbreviated titleICHEP2012
    OtherThe Australian particle physics community was honoured to host the 36th ICHEP conference in 2012 in Melbourne. This conference has long been the reference event for our international community. The announcement of the discovery of the Higgs boson at the LHC was a major highlight, with huge international press coverage. ICHEP2012 was described by CERN Director-General, Professor Rolf Heuer, as a landmark conference for our field.
    In additional to the Higgs announcement, important results from neutrino physics, from flavour physics, and from physics beyond the standard model also provided great interest.
    There were also updates on key accelerator developments such as the new B-factories, plans for the LHC upgrade, neutrino facilities and associated detector developments.
    ICHEP2012 exceeded the promise expected of the key conference for our field, and really did provide a reference point for the future.

    Many thanks to the contribution reviewers: Andy Bakich, Csaba Balazs, Nicole Bell, Catherine Buchanan, Will Crump, Cameron Cuthbert, Ben Farmer, Sudhir Gupta, Elliot Hutchison, Paul Jackson, Geng-Yuan Jeng, Archil Kobakhidze, Doyoun Kim, Tong Li, Antonio Limosani (Head Editor), Kristian McDonald, Nikhul Patel, Aldo Saavedra, Mark Scarcella, Geoff Taylor, Ian Watson, Graham White, Tony Williams and Bruce Yabsley.
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