Dispersion relation formalism for virtual Compton scattering of the proton

B. Pasquini, D. Drechsel, M. Gorchtein, A. Metz, M. Vanderhaeghen

    Research output: Contribution to JournalArticleAcademic

    Abstract

    We present in detail a dispersion relation formalism for virtual Compton scattering (VCS) off the proton from threshold into the Δ(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 Δ(1232)-resonance show an enhanced sensitivity to the generalized polarizabilities.
    Original languageEnglish
    Pages (from-to)185-208
    JournalEuropean Physical Journal A. Hadrons and Nuclei
    Volume11
    DOIs
    Publication statusPublished - 2001

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