6533b827fe1ef96bd128727b

RESEARCH PRODUCT

Generalized polarizabilities of the nucleon in chiral effective theories

Thomas R. HemmertBarry R. HolsteinBarry R. HolsteinG. KnöchleinDieter Drechsel

subject

PhysicsNuclear and High Energy PhysicsParticle physicsNuclear TheoryHeavy baryon chiral perturbation theoryField (physics)Compton scatteringFOS: Physical sciencesResonance (particle physics)JNuclear Theory (nucl-th)Scattering amplitudeHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Quantum mechanicsddc:530Perturbation theoryNuclear ExperimentNucleonElectron scattering

description

Using the techniques of chiral effective field theories we evaluate the so called generalized polarizabilities of the nucleon, which characterize the structure dependent components in virtual Compton scattering (VCS) as probed in the electron scattering reaction e N \to e' N gamma. Results are given for both spin-dependent and spin-independent structure effects to O(p^3) in SU(2) Heavy Baryon Chiral Perturbation Theory and to O(epsilon^3) in the SU(2) Small Scale Expansion. Finally we compare our calculations with results from the pioneering VCS experiment on the proton from Mainz.

https://doi.org/10.1103/physrevd.62.014013