| Preprint/Internal Report | PUBDB-2015-02966 |
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2015
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Report No.: DESY-15-095; arXiv:1507.06819
Abstract: We consider six-dimensional supergravity with gauge group $SO(10)\times U(1)_A$, compactified on the orbifold $T^2 / \mathbb{Z}_2$. Three quark-lepton generations arise as zero modes of a bulk $\bf16$-plet due to magnetic flux of the anomalous $U(1)_A$. Boundary conditions at the four fixed points break $SO(10)$ to subgroups whose intersection is the Standard Model gauge group. The gauge and Higgs sector consist of 'split' $SO(10)$ multiplets. As consequence of the $U(1)_A$ flux, squarks and sleptons are much heavier than gauge bosons, Higgs bosons, gauginos and higgsinos. We thus obtain a picture similar to 'split supersymmetry.' The flavor structure of the quark and lepton mass matrices is determined by the symmetry breaking at the orbifold fixed points.
Keyword(s): fixed point: orbifold ; supersymmetry: split ; flux: magnetic ; lepton: mass ; SO(10) ; boundary condition ; symmetry breaking ; compactification ; Higgs particle ; supergravity ; gauge boson ; zero mode ; multiplet ; structure ; gaugino ; slepton ; squark ; flavor ; quark
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Journal Article
Split symmetries
Physics letters / B 750, 615-619 (2015) [10.1016/j.physletb.2015.09.069]
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