Abstract
We revisit the description of the Pomeron within the effective string theory of QCD. Using a string duality relation, we show how the static potential maps onto the high-energy scattering amplitude that exhibits the Pomeron behavior. Besides the Pomeron intercept and slope, new additional terms stemming from the higher order string corrections are shown to affect both the growth of the nucleon's size at high energies and its profile in impact parameter space. The stringy description also allows for an odderon that only disappears in critical dimension. Some of the Pomeron's features that emerge within the effective string description can be studied at the future EIC collider.
Highlights
Hadron-hadron scattering at high energy is dominated by the exchange of weakly interacting Pomerons and Reggeons with vacuum and meson quantum numbers respectively
In this paper we will focus on the systematics of the QCD effective string thpeoffiffiry (EST), when the hadron-hadron scattering at large s is dominated by exchange of weakly fluctuating strings in a tube configuration
II we review what is known about QCD strings from two sources: (i) the effective string theory (EST) and (ii) numerical studies of lattice gauge theory
Summary
Hadron-hadron scattering at high energy is dominated by the exchange of weakly interacting Pomerons and Reggeons with vacuum and meson quantum numbers respectively. A first principle approach to Reggeon physics in the context of weakly coupled QCD was succesfully obtained by re-summing rapidity ordered Feynman graphs [2]. A new phenomenon in hadron-hadron scattering at large energy may take place when the intrinsic temperature of the string becomes comparable to the Hagedorn temperature. In this paper we will focus on the systematics of the QCD effective string thpeoffiffiry (EST), when the hadron-hadron scattering at large s is dominated by exchange of weakly fluctuating strings in a tube configuration.
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