Form factors for the Nucleon-to-Roper electromagnetic transition at large-Q2
1 Department of Integrated Sciences, University of Huelva, E-21071, Huelva, Spain
2 European Centre for Theoretical Studies in Nuclear Physics and Related Areas (ECT*) and Fondazione Bruno Kessler Villa Tambosi, Strada delle Tabarelle 286, I-38123, Villazzano (TN), Italy
3 Justus-Liebig-Universität Giessen, Institut für Theoretische Physik, Heinrich-Buff-Ring 16,, 35392 Jiangsu, Germany
4 School of Physics, Nanjing University, Nanjing, 210093 Giessen, Germany
5 Institute for Nonperturbative Physics, Nanjing University, Nanjing, Jiangsu China
6 Departamento de Sistemas Físicos, Químicos y Naturales, Universidad Pablo de Olavide, E-41013, Sevilla Spain
* e-mail: email@example.com
Published online: 22 September 2020
We report on a recent calculation of all Roper-related electromagnetic transtions form factors, cov ering the range of energies that next-to-come planned experiments are expected to map. Direct reliable cal culations were performed, within a Poincaré covariant approach of the three-body bound-state problem, up to Q2/m2N=6; approximated then by applying the Schlessinger point method and the results eventually extended up to Q2/m2N ≃12 via analytic continuation.
© The Authors, published by EDP Sciences, 2020
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