Phenomenology Of The Holographic Soft-Wall Model Of QCD With "Reversed" Dilaton

TL;DR

This paper explores a modified holographic QCD model with a negative dilaton profile, analyzing meson spectra, decay constants, and chiral symmetry breaking, and compares results with the traditional positive-dilaton model.

Contribution

It introduces and analyzes a reversed dilaton profile in the soft-wall holographic QCD model, providing new insights into meson phenomenology and chiral symmetry breaking.

Findings

Mass spectra and decay constants are computed for vector and scalar mesons.

The model's results are compared with the positive-dilaton case, highlighting differences.

Chiral symmetry breaking and meson couplings are analyzed within this modified framework.

Abstract

We study the phenomenology of the recently proposed modified version of the Soft-Wall model of holographic QCD with a negative dilaton profile. We investigate vector and scalar mesons, evaluating mass spectra, decay constants and two-point correlation functions. We then study chiral symmetry breaking and compute the coupling of a scalar meson with two pseudoscalars. Finally, we compare the results with the ones found in the literature in the positive-dilaton case.