Form factors for the Nucleon-to-Roper electromagnetic transition at large-$Q^2$

Chen Chen; Craig D. Roberts; Daniele Binosi; Jorge Segovia; Jos\'e Rodr\'iguez-Quintero; Ya Lu

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Form factors for the Nucleon-to-Roper electromagnetic transition at large-$Q^2$

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arxiv 1909.13793 v2 pith:ST5XE7BP submitted 2019-09-30 nucl-th hep-phnucl-ex

José Rodríguez-Quintero , Daniele Binosi , Chen Chen , Ya Lu , Craig D. Roberts , Jorge Segovia This is my paper

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keywords electromagneticfactorsformanalyticapplyingapproachapproximatedbound-state

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abstract

We report on a recent calculation of all Roper-related electromagnetic transtions form factors, covering the range of energies that next-to-come planned experiments are expected to map. Direct reliable calculations were performed, within a Poincar\'e covariant approach of the three-body bound-state problem, up to $Q^2/m^2_N$=6; approximated then by applying the Schlessinger point method and the results eventually extended up to $Q^2/m^2_N\simeq$12 via analytic continuation.

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