Form factors for the Nucleon-to-Roper electromagnetic transition at large-Q2

José Rodríguez-Quintero; Daniele Binosi; Chen Chen; Ya Lu; Craig D. Roberts; Segovia Segovia

doi:10.1051/epjconf/202024102009

Proceedings

Open Access

EPJ Web of Conferences 241, 02009 (2020)
https://doi.org/10.1051/epjconf/202024102009

Form factors for the Nucleon-to-Roper electromagnetic transition at large-Q²

José Rodríguez-Quintero¹^*, Daniele Binosi², Chen Chen³, Ya Lu⁴^,5, Craig D. Roberts⁴^,5 and Segovia Segovia⁶

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: jose.rodriguez@dfaie.uhu.es

Published online: 22 September 2020

Abstract

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/m²_N=6; approximated then by applying the Schlessinger point method and the results eventually extended up to Q²/m²_N ≃12 via analytic continuation.

© The Authors, published by EDP Sciences, 2020

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