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Natural SUSY from SU(5) orbifold GUT

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Abstract

We propose a realistic 5D orbifold GUT model that can reduce to natural (or radiative natural) supersymmetry as the low energy effective theory. Supersymmetry as well as gauge symmetry are broken by the twist boundary conditions. We find that it is non-trivial to introduce other flavor symmetry other than the SU(2) R R-symmetry. We ameliorate the tension between the small number of free parameters and the successful electroweak symmetry breaking by introducing non-minimal Kahler potentials. A large trilinear term A t , which is necessary to give a 125 GeV Higgs boson, is naturally provided in our scenario. A scan under current experimental constraints shows that our model can realize natural (or radiative natural) supersymmetry. Only radiative natural supersymmetry can naturally lead to 125 GeV higgs. Additional dark matter species other than neutralino (like axion) are needed to provide enough relic density. Relatively large stop masses are necessary to give realistic higg mass in most of the parameter spaces.

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Authors and Affiliations

  1. International Joint Research Laboratory for Quantum Functional Materials, Department of Physics and Engineering, Zhengzhou University, Henan, 450001, P.R. China

    Chengcheng Han & Fei Wang

  2. State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Academia Sinica, Beijing, 100190, P.R. China

    Chengcheng Han, Fei Wang & Jin Min Yang

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  1. Chengcheng Han
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  2. Fei Wang
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Correspondence to Fei Wang.

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ArXiv ePrint: 1304.5724

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Han, C., Wang, F. & Yang, J.M. Natural SUSY from SU(5) orbifold GUT. J. High Energ. Phys. 2013, 197 (2013). https://doi.org/10.1007/JHEP11(2013)197

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