D-brane Standard Model-Like and Scalar Dark Matter in Type IIA Superstring Theory

Abstract

In light of the present LHC Run II at $\sqrt{s}=13$ $TeV$, string y standard-like model is studied. Concretely, a singlet $S$ scalar-extended SM given in terms four stacks of intersecting D6-branes in a type IIA superstring compactification producing a large gauge symmetry is examined. The involved scales are dealt with. According to the dark matter relic density, the mass of the scalar dark matter beyond the SM $m_S\lesssim 10^{3}GeV$ and the corresponding Higgs portal couplings ${\lambda }_{SH}\lesssim 10^{-8}$ are approached.

13 pages, latex, 4 figures. To appear in JETP (2017)

References in corpus (3)

• Orientifolds, hypercharge embeddings and the Standard Model
• On mass hierarchies in orientifold vacua
• Update on 750 GeV diphotons from closed string states