Hybrid exotic mesons in soft-wall AdS/QCD

TL;DR

This paper investigates hybrid exotic mesons with specific quantum numbers using soft-wall AdS/QCD, compares predicted masses to experimental candidates, and explores thermal effects via spectral functions in different AdS black hole models.

Contribution

It provides a novel analysis of hybrid meson spectra in the soft-wall AdS/QCD framework and compares thermal effects in different holographic models.

Findings

Predicted meson masses align with experimental candidates.

Thermal effects influence spectral functions significantly.

Differences between AdS-Black Hole and Hawking-Page models are discussed.

Abstract

Hybrid mesons with exotic quantum numbers $J^{PC}=1^{-+}$ are examined in soft-wall AdS/QCD. The predicted mass spectrum is compared to the measured values of the candidates $\pi_1(1400)$, $\pi_1(1600)$ and $\pi_1(2015)$. Thermal effects are analysed through the spectral function in the AdS-Black Hole model, and the differences with the Hawking-Page description are discussed.