Nuclear photon scattering by 208Pb

Exchange effects in photon scattering off the deuteron

The theory of nuclear Compton scattering is reformulated with explicit consideration of both virtual and real pionic degrees of freedom. The effects due to low-lying nuclear states, to seagull terms, to pion condensation and to the Delta dynamics in the nucleus and their interplay in the different energy regions are examined. It is shown that all corrections to the one-body terms, of diffractive behaviour determined by the nuclear form factor, have an effective two-body character. The possibility of using Compton scattering as a complementary source of information about nuclear dynamics is restressed.

https://iopscience.iop.org/article/10.1088/0305-4616/12/9/008/pdf

Nuclear Compton scattering

Radiative muon capture in medium-heavy nuclei

Quark condensate in the nuclear medium

A generalization of low-energy theorems is given to obtain the Compton-scattering amplitude on nuclei up to energies smaller than the excitation of nucleons. By means of this technique the presence of seagull terms coming from exchange forces is predicted and the consistency of their contribution is demonstrated in the framework of subtracted dispersion relations.

M. Rosa-Clot

Papers

Low-energy theorems for nuclei