6533b852fe1ef96bd12aa438

RESEARCH PRODUCT

Dispersion relation formalism for virtual Compton scattering of the proton

B. PasquiniMikhail GorchteinMarc VanderhaeghenDieter DrechselAndreas Metz

subject

PhysicsNuclear and High Energy PhysicsParticle physics/dk/atira/pure/sustainabledevelopmentgoals/affordable_and_clean_energyCompton scatteringFOS: Physical sciencesComputer Science::Software EngineeringObservableHigh Energy Physics - PhenomenologyFormalism (philosophy of mathematics)High Energy Physics - Phenomenology (hep-ph)PionQuantum electrodynamicsDispersion relationComputer Science::Networking and Internet ArchitectureEnhanced sensitivitySDG 7 - Affordable and Clean Energy

description

We present in detail a dispersion relation formalism for virtual Compton scattering (VCS) off the proton from threshold into the $\Delta(1232)$-resonance region. Such a formalism can be used as a tool to extract the generalized polarizabilities of the proton from both unpolarized and polarized VCS observables over a larger energy range. We present calculations for existing and forthcoming VCS experiments and demonstrate that the VCS observables in the energy region between pion production threshold and the $\Delta(1232)$-resonance show an enhanced sensitivity to the generalized polarizabilities.

10.1007/s100500170084https://research.vu.nl/en/publications/266e912c-e8db-407a-aece-2b45a28761e6