2022/01/24 by H. G. Dosch, Guy F. de Téramond, Dosch, Hans Günter +9 · 2 citations
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.2201.09813
openalex publication_date 2022/01/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The Pomeron Regge trajectory underlies the dynamics dependence of hadronic total cross sections and diffractive reactions at high energies. The physics of the Pomeron is closely related to the gluon distribution function and the gluon gravitational form factor of the target hadron. In this article we examine the scale dependence of the nonperturbative gluon distribution in the nucleon and the pion which was derived in a previous article [Phys. Rev. D 104, 114005 (2021)] in the framework of holographic light-front QCD and the Veneziano model. We argue that the QCD evolution of the gluon distribution function g(x,μ) to large μ2 leads to a single scale-dependent Pomeron. The resulting Pomeron trajectory αP(t, μ) not only depends on the momentum transfer squared t, but also on the physical scale μ of the amplitude, such as the virtuality Q2 of the interacting photon in inclusive diffractive electroproduction. This can explain not only the Q2 evolution of the proton structure function F2(x,Q2) at small x, but also the observed energy and Q2 dependence of high energy diffractive processes involving virtual photons up to LHC energies.