Nucleon QCD sum rules in nuclear matter including radiative corrections

TL;DR

This paper calculates nucleon parameters in nuclear matter using QCD sum rules, incorporating radiative corrections to improve accuracy and analyze their density dependence, resulting in more precise estimates of nucleon self-energies.

Contribution

It introduces the inclusion of radiative corrections beyond the logarithmic approximation in QCD sum rules for nucleons in nuclear matter, providing new insights into their density dependence.

Findings

Radiative corrections increase nucleon self-energies by about 30-40 MeV at saturation density.

Results are stable against variations in mbda_{QCD}.

The study refines nucleon parameter estimates in nuclear matter with radiative corrections.

Abstract

We calculate the nucleon parameters in nuclear matter using the QCD sum rules method. The radiative corrections to the leading operator product expansion terms are included, with the corrections of the order \alpha_s beyond the logarithmic approximation taken into account. The density dependence of the influence of radiative corrections on the nucleon parameters is obtained. At saturation density the radiative corrections increase the values of vector and scalar self-energies by about 40 MeV, and 30 MeV correspondingly. The results appear to be stable with respect to possible variations of the value of \Lambda_{QCD}.