Light nondegenerate squarks at the LHC

Rakhi Mahbubani, Michele Papucci, Gilad Perez, Joshua T. Ruderman, Andreas Weiler

    Research output: Contribution to journalArticlepeer-review


    Experimental bounds on squarks of the first two generations assume their masses to be eightfold degenerate and consequently constrain them to be heavier than ∼1.4 TeV when the gluino is lighter than 2.5 TeV. The assumption of squark-mass universality is neither a direct consequence of minimal flavor violation (MFV), which allows for splittings within squark generations, nor a prediction of supersymmetric alignment models, which allow for splittings between generations. We reinterpret a recent CMS multijet plus missing energy search allowing for deviations from U(2) universality and find significantly weakened squark bounds: A 400 GeV second-generation squark singlet is allowed, even with exclusive decays to a massless neutralino, and, in an MFV scenario, the down-type squark singlets can be as light as 600 GeV, provided the up-type singlets are pushed up to 1.8 TeV, for a 1.5 TeV gluino and decoupled doublet squarks.

    Original languageEnglish (US)
    Article number151804
    JournalPhysical Review Letters
    Issue number15
    StatePublished - Apr 10 2013

    ASJC Scopus subject areas

    • General Physics and Astronomy


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