Regge spectral generator and form factors from hard exclusive amplitudes in holographic QCD

TL;DR

This paper introduces a spectral generator in holographic QCD that encodes the Regge spectrum and provides analytic forms for form factors and parton distributions based on the tower of hard exclusive amplitudes.

Contribution

It presents a novel spectral generator derived from holographic light-front QCD that captures the Regge spectrum and yields analytic expressions for form factors and parton distributions.

Findings

The spectral generator encodes the full Regge spectrum.

It provides analytic representations of physical form factors.

It yields a compact analytic form of parton distributions.

Abstract

We show that the infinite tower of hard exclusive amplitudes in holographic light-front QCD leads to a spectral generator $G(\alpha,\lambda)$ which encodes the full Regge spectrum. The construction assumes a Poisson distribution of Fock-state components, where $\lambda$ represents the average parton multiplicity above the minimal valence configuration. The resulting generator yields a Regge spectrum invariant under continuous $\lambda$-deformations and provides an analytic representation of physical form factors. The coherent summation also yields a compact analytic representation of parton distributions.