Abstract:Abstract. S. Brodsky, F.J. Llanes-Estrada and A. Szczepaniak formulated the J = 0 fixed pole universality hypothesis for (deeply) virtual Compton scattering. We show that in the Bjorken limit this hypothesis is equivalent to the validity of the inverse moment sum rule for the D-term form factor. However, any supplementary D-term added to a generalized parton distribution (GPD) results in an additional J = 0 fixed pole contribution that violates universality. Unfortunately, one can not provide any reliable theo… Show more
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