More Supersymmetric Standard-like Models from Intersecting D6-branes on Type IIA Orientifolds

TL;DR

This paper constructs new supersymmetric Standard-like models using intersecting D6-branes on Type IIA orientifolds, achieving models with fewer exotics and more realistic family structures.

Contribution

It introduces novel classes of models with flexible brane wrappings, including tilted tori, and demonstrates solutions with unified family origins and left-right symmetry.

Findings

Models with fewer Higgs doublets

All three families from the same sector

Examples of left-right symmetric models

Abstract

We present new classes of supersymmetric Standard-like models from type IIA $\IT^6/(\IZ_2\times \IZ_2)$ orientifold with intersecting D6-branes. D6-branes can wrap general supersymmetric three-cycles of $\IT^6=\IT^2\times \IT^2\times \IT^2$, and any $\IT^2$ is allowed to be tilted. The models still suffer from additional exotics, however we obtained solutions with fewer Higgs doublets, as well as models with all three families of left-handed quarks and leptons arising from the same intersecting sector, and examples of a genuine left-right symmetric model with three copies of left-handed and right-handed families of quarks and leptons.