Relativistic Effects and the Role of Heavy-Meson Exchange in Deuteron Photodisintegration

Relativistic effects and the role of heavy-meson exchange in deuteron photodisintegration are studied systematically for photon energies below the pion-production threshold. In a (p/M)-expansion, all leading-order relativistic one-body and \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}\end{document}-exchange as well as all static heavy-meson exchange currents consistent with the Bonn momentum-space one-boson-exchange potentials are included. In addition, one- and two-body boost effects have been investigated. Sizeable effects from the various two-body contributions beyond \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}\end{document}-exchange have been found in almost every observable considered, i.e., differential cross section and single-polarization observables.