Light-front holographic radiative transition form factors for light mesons

TL;DR

This paper uses holographic light-front wavefunctions to predict radiative decay widths and transition form factors of light mesons, achieving excellent agreement with experimental data.

Contribution

It introduces a novel application of spin-improved holographic light-front wavefunctions to calculate meson transition form factors and decay widths.

Findings

Predicted decay widths match experimental data.

Transition form factors agree with leptonic decay measurements.

Method provides a new tool for meson structure analysis.

Abstract

We predict the $\mathcal{V} \to \mathcal{P} \gamma$ decay widths and the $\mathcal{V} \to \mathcal{P} \gamma^{*}$ transition form factors, where $\mathcal{V}=(\rho, \omega, K^*, \phi)$ and $\mathcal{P}= (\pi,K, \eta,\eta^\prime)$, using spin-improved holographic light-front wavefunctions for the mesons. We find excellent agreement with the available data for both the decay widths and the timelike transition form factors extracted from the leptonic conversion decays $\mathcal{V} \to \mathcal{P} l^+ l^-$.