Generalized polarizabilities and the spin-averaged amplitude in virtual Compton scattering off the nucleon

1996/08/28 by D. Drechsel, G. Knoechlein, Germar Knöchlein +3 · 4 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-th

paper · pdf · doi:10.1103/physrevc.55.424

published as Phys.Rev.C55:424-430,1997 · 13 pages, 1 postscript figure, Revtex using epsf

arxiv created 1996/08/28 · openalex publication_date 1997/01/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We discuss the low-energy behavior of the spin-averaged amplitude of virtual Compton scattering off a nucleon. Based on gauge invariance, Lorentz invariance, and the discrete symmetries, it is shown that to first order in the frequency of the final real photon only two generalized polarizabilities appear. Different low-energy expansion schemes are discussed and put into perspective.

Citations

• Virtual compton scattering and generalized polarizabilities of the proton

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