E2 Instanton Effects and Higgs Physics In Intersecting Brane Models

TL;DR

This paper explores how string instanton effects in a type IIA intersecting brane model can generate additional Higgs couplings non-perturbatively, potentially raising the Higgs mass to observable TeV scales.

Contribution

It introduces a specific intersecting brane model with E2-instanton effects that produce new Higgs couplings and impact Higgs mass predictions.

Findings

Extra Higgs couplings are generated via E2 instantons.

The model predicts a significant uplift of the Higgs mass at TeV scales.

The setup maintains a MSSM-like spectrum with additional non-perturbative effects.

Abstract

String instanton effects in Higgs physics are discussed through a type IIA model based on T^{6}/(Z^{2}\times Z^{'2}) orentifold compactifaction. By inclusion of rigid E2-branes, the model exhibits a MSSM-like spectrum, as well as extra mu and quartic Higgs couplings. These extra couplings are induced via E2 instantons non-perturbatively. Setting the string scale at 10^{18} GeV, one gets interesting TeV Higgs physics. In particlular, the tree-level Higgs mass can be uplifted substantially.