Intersecting Branes, SUSY Breaking and the 2TeV Excess at the LHC
Abstract
Intersecting D-brane models in string theory can naturally support the gauge and matter content of left-right symmetric extensions of the Standard Model with gauge symmetry SU(3)c x SU(2)L x SU(2)R x U(1)B-L. Considering such models as candidates for explaining the 2TeV excesses seen in Run-1 by both ATLAS and CMS, the minimal possible scale of supersymmetry breaking is determined by the requirement of precise one-loop gauge coupling unification. For the vector-like, bifundamental and (anti-)symmetric Higgs content of such brane configurations, this comes out fairly universally at around 19TeV. For the SU(2)R gauge coupling one finds values 0.48<gR(MR)<0.6. Threshold corrections can potentially lower the scale of supersymmetry breaking.
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