Towards a realistic Standard Model from D-brane configurations

Abstract

Effective low energy models arising in the context of D-brane configurations with Standard Model (SM) gauge symmetry extended by several gauged abelian factors are discussed. The models are classified according to their hypercharge embeddings consistent with the SM spectrum hypercharge assignment. Particular cases are analyzed according to their perspectives and viability as low energy effective field theory candidates. The resulting string scale is determined by means of a two-loop renormalization group calculation. Their implications in Yukawa couplings, neutrinos and flavor changing processes are also presented.

22 pages, 12 EPS figures, some clarifications/references added

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• Minimal Anomalous U(1)' Extension of the MSSM
• Trilinear Anomalous Gauge Interactions from Intersecting Branes and the Neutral Currents Sector
• Instanton induced charged fermion and neutrino masses in a minimal Standard Model scenario from intersecting D-branes
• Cosmological Properties of a Gauged Axion
• A U(3)_C X U(3)_L X U(3)_R gauge symmetry from intersecting D-branes
• The Search for Extra Neutral Currents at the LHC: QCD and Anomalous Gauge Interactions
• $\mathcal{O}(\theta )$ Feynman rules for quadrilinear gauge boson couplings in noncommutative standard model
• Anomalous U(1), Dark Matter and Asymmetry
• Supersymmetry Breaking in a Minimal Anomalous Extension of the MSSM