arXiv:2010.10917·v1·High Energy Physics — Lattice
Finite volume corrections to forward Compton scattering off the nucleon
J. Lozano (Bonn U., HISKP)🇩🇪 · A. Agadjanov (Mainz U.)🇩🇪 · J. Gegelia (Bochum U. and Tbilisi State U.)🇩🇪 · U.-G. Meißner (Bonn U., HISKP and FZ Jülich and Tbilisi State U.)🇩🇪 · A. Rusetsky (Bonn U., HISKP and Tbilisi State U.)🇩🇪
Abstract
We calculate the spin-averaged amplitude for doubly virtual forward Compton scattering off nucleons in the framework of manifestly Lorentz invariant baryon chiral perturbation theory at complete one-loop order . The calculations are carried out both in the infinite and in a finite volume. The obtained results allow for a detailed estimation the finite-volume corrections to the amplitude which can be extracted on the lattice using the background field technique.
Comments: 35 pages, 8 figures