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A natural little hierarchy for RS from accidental SUSY

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Abstract

We use supersymmetry to address the little hierarchy problem in Randall-Sundrum models by naturally generating a hierarchy between the IR scale and the electroweak scale. Supersymmetry is broken on the UV brane which triggers the stabilization of the warped extra dimension at an IR scale of order 10 TeV. The Higgs and top quark live near the IR brane whereas light fermion generations are localized towards the UV brane. Supersymmetry breaking causes the first two sparticle generations to decouple, thereby avoiding the supersymmetric flavour and CP problems, while an accidental R-symmetry protects the gaugino mass. The resulting low-energy sparticle spectrum consists of stops, gauginos and Higgsinos which are sufficient to stabilize the little hierarchy between the IR scale and the electroweak scale. Finally, the supersymmetric little hierarchy problem is ameliorated by introducing a singlet Higgs field on the IR brane.

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Authors and Affiliations

  1. School of Physics, University of Melbourne, Melbourne, Victoria, 3010, Australia

    Tony Gherghetta, Benedict von Harling & Nicholas Setzer

  2. Stanford Institute of Theoretical Physics, Stanford University, Stanford, CA, 94305, U.S.A.

    Tony Gherghetta

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  1. Tony Gherghetta
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  2. Benedict von Harling
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Correspondence to Benedict von Harling.

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ArXiv ePrint: 1104.3171

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Gherghetta, T., von Harling, B. & Setzer, N. A natural little hierarchy for RS from accidental SUSY. J. High Energ. Phys. 2011, 11 (2011). https://doi.org/10.1007/JHEP07(2011)011

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