Real and Virtual Compton Scattering: the nucleon polarisabilities

Abstract

We give an overview of low-energy Compton scattering (gamma^(*) p --> gamma p) with a real or virtual incoming photon. These processes allow the investigation of one of the fundamental properties of the nucleon, i.e. how its internal structure deforms under an applied static electromagnetic field. Our knowledge of nucleon polarisabilities and their generalization to non-zero four-momentum transfer will be reviewed, including the presently ongoing experiments and future perspectives.

20 pages, 12 figures. Minireview/Proceedings of "Many-Body Structure of Strongly Interacting Systems", Mainz, Germany, Feb. 23-25 2011 . V2: typos corrected. version to appear in EPJ Special Topics

References in corpus (7)

• High-precision determination of the electric and magnetic form factors of the proton
• Upgrade of the Glasgow photon tagging spectrometer for Mainz MAMI-C
• Extracting Nucleon Magnetic Moments and Electric Polarizabilities from Lattice QCD in Background Electric Fields
• Proton spin polarizabilities from polarized Compton scattering
• Beam-helicity asymmetry in photon and pion electroproduction in the Delta(1232) resonance region at Q^2= 0.35 (GeV/c)^2
• Virtual Compton Scattering measurements in the ${\gamma }^{\ast }N\to \Delta$ transition
• Nucleon Polarizabilities: Theory

Cited by in corpus (13)

• Baryons as relativistic three-quark bound states
• The Magnetic Structure of Light Nuclei from Lattice QCD
• Hadron Polarizabilities
• Nucleon Compton scattering in the Dyson-Schwinger approach
• Nucleon Polarisabilities at and Beyond Physical Pion Masses
• Nucleon resonances in Compton scattering
• Virtual Compton Scattering and the Generalized Polarizabilities of the Proton at Q^2=0.92 and 1.76 GeV^2
• Virtual Compton Scattering and Nucleon Generalized Polarizabilities
• Polarizability relations across real and virtual Compton scattering processes
• Nucleon Polarizabilities: Theory
• Lepton mass effects in the Bethe-Heitler process
• Towards a microscopic understanding of nucleon polarizabilities
• The Proton Electromagnetic Generalized Polarizabilities