The Conformal Sector of F-theory GUTs

Details The Conformal Sector of F-theory GUTs The Conformal Sector of F-theory GUTs

2011-03-16

arxiv.org/abs/1103.3287v2

JHEP 1107:075,2011

Physics

High Energy Physics

High Energy Physics - Theory

v2: 51 pages, 2 figures, remark added, typos corrected

Scientific paper

10.1007/JHEP07(2011)075

D3-brane probes of exceptional Yukawa points in F-theory GUTs are natural hidden sectors for particle phenomenology. We find that coupling the probe to the MSSM yields a new class of N = 1 conformal fixed points with computable infrared R-charges. Quite surprisingly, we find that the MSSM only weakly mixes with the strongly coupled sector in the sense that the MSSM fields pick up small exactly computable anomalous dimensions. Additionally, we find that although the states of the probe sector transform as complete GUT multiplets, their coupling to Standard Model fields leads to a calculable threshold correction to the running of the visible sector gauge couplings which improves precision unification. We also briefly consider scenarios in which SUSY is broken in the hidden sector. This leads to a gauge mediated spectrum for the gauginos and first two superpartner generations, with additional contributions to the third generation superpartners and Higgs sector.

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