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Low energy probes of PeV scale sfermions

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Abstract

We derive bounds on squark and slepton masses in mini-split supersymmetry scenario using low energy experiments. In this setup gauginos are at the TeV scale, while sfermions are heavier by a loop factor. We cover the most sensitive low energy probes including electric dipole moments (EDMs), meson oscillations and charged lepton flavor violation (LFV) transitions. A leading log resummation of the large logs of gluino to sfermion mass ratio is performed. A sensitivity to PeV squark masses is obtained at present from kaon mixing measurements. A number of observables, including neutron EDMs, μ to e transitions and charmed meson mixing, will start probing sfermion masses in the 100 TeV-1000 TeV range with the projected improvements in the experimental sensitivities. We also discuss the implications of our results for a variety of models that address the flavor hierarchy of quarks and leptons. We find that EDM searches will be a robust probe of models in which fermion masses are generated radiatively, while LFV searches remain sensitive to simple-texture based flavor models.

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Authors and Affiliations

  1. Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL, 60510, U.S.A.

    Wolfgang Altmannshofer & Roni Harnik

  2. Department of Physics, University of Cincinnati, Cincinnati, Ohio, 45221, U.S.A.

    Jure Zupan

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  1. Wolfgang Altmannshofer
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ArXiv ePrint: 1308.3653

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Altmannshofer, W., Harnik, R. & Zupan, J. Low energy probes of PeV scale sfermions. J. High Energ. Phys. 2013, 202 (2013). https://doi.org/10.1007/JHEP11(2013)202

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