Sizable D-term contribution as a signature of $E_6 \times SU(2)_F \times U(1)_A$ SUSY GUT model

Nobuhiro Maekawa; Yu Muramatsu; Yoshihiro Shigekami

doi:10.1093/ptep/ptu151

paper

Sizable D-term contribution as a signature of $E_{6} \times S U (2)_{F} \times U (1)_{A}$ SUSY GUT model

arXiv:1405.4193 · doi:10.1093/ptep/ptu151

Abstract

We show that the sizable $D$ -term contributions to sfermion mass spectrum can be signatures of certain GUT, $E_{6} \times S U (2)_{F} \times U (1)_{A}$ GUT. Note that these $D$ -term contributions deviate the degenerate sfermion masses among different generations in this model. This is different from the previous works which have argued the $D$ -term contributions, which deviate masses only between sfermions with different quantum charges, as a signature of GUT with larger rank unification group. Such $D$ -terms are strongly constrained by the FCNC processes if the SUSY breaking scale is the weak scale. However, in $E_{6} \times S U (2)_{F} \times U (1)_{A}$ , natural SUSY type sfermion mass spectrum is obtained, and if the masses of $10_{3}$ sfermions are larger than $O (1 TeV)$ to realize 126 GeV Higgs and the other sfermion masses are $O (10 TeV)$ , then sizable $D$ -term contribution is allowed. If the deviations by these $D$ -terms can be observed in future experiments like 100 TeV proton collider or muon collider, we may confirm the $E_{6} \times S U (2)_{F} \times U (1)_{A}$ GUT.

arXiv comment19 pages, 1 figure v2:text is improved

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Abstract

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Sizable D-term contribution as a signature of $E_{6} \times S U (2)_{F} \times U (1)_{A}$ SUSY GUT model