Compton scattering and generalized polarizabilities
- Institut fuer Kernphysik, Johannes Gutenberg-Universitaet, D-55099 Mainz (Germany)
In recent years, real and virtual Compton scattering off the nucleon have attracted considerable interest from both the experimental and theoretical sides. Real Compton scattering gives access to the so-called electromagnetic polarizabilities containing the structure information beyond the global properties of the nucleon such as its charge, mass, and magnetic moment. These polarizabilities have an intuitive interpretation in terms of induced dipole moments and thus characterize the response of the constituents of the nucleon to a soft external stimulus. The virtual Compton scattering reaction e- p {yields} e- p{gamma} allows one to map out the local response to external fields and can be described in terms of generalized electromagnetic polarizabilities. A simple classical interpretation in terms of the induced electric and magnetic polarization densities is proposed. We will discuss experimental results for the polarizabilities of the proton and compare them with theoretical predictions.
- OSTI ID:
- 20718902
- Journal Information:
- AIP Conference Proceedings, Vol. 768, Issue 1; Conference: 19. European conference on few-body problems in physics, Groningen (Netherlands), 23-27 Aug 2004; Other Information: DOI: 10.1063/1.1932882; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Nucleon polarizability: Recent progress and future plans
CP violation in Compton scattering