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: firstname.lastname@example.org
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
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.