Weak-Interacting Holographic QCD

TL;DR

This paper introduces a straightforward method to incorporate low-energy weak interactions into holographic QCD models, enabling the calculation of electroweak observables in strongly coupled QCD systems.

Contribution

It presents a novel prescription based on double-trace deformations within the AdS/CFT framework, applicable to various holographic QCD models for electroweak phenomenology.

Findings

Successfully calculated neutron beta decay rates.

Analyzed charged pion weak decay processes.

Estimated meson-nucleon parity non-conserving couplings.

Abstract

We propose a simple prescription for including low-energy weak-interactions into the framework of holographic QCD, based on the standard AdS/CFT dictionary of double-trace deformations. As our proposal enables us to calculate various electro-weak observables involving strongly coupled QCD, it opens a new perspective on phenomenological applications of holographic QCD. We illustrate efficiency and usefulness of our method by performing a few exemplar calculations; neutron beta decay, charged pion weak decay, and meson-nucleon parity non-conserving (PNC) couplings. The idea is general enough to be implemented in both Sakai-Sugimoto as well as Hard/Soft Wall models.