Abstract
Pion electroproduction off the proton is analyzed in a new framework based on a general parametrization of transition amplitudes, including constraints from gauge invariance and threshold behavior. Data with energies $1.13\phantom{\rule{4pt}{0ex}}\mathrm{GeV}<W<1.6$ GeV and ${Q}^{2}$ below $6\phantom{\rule{4pt}{0ex}}{\mathrm{GeV}}^{2}$ are included. The model is an extension of the latest J\"ulich-Bonn solution incorporating constraints from pion-induced and photoproduction data. Performing large-scale fits ($\ensuremath{\approx}{10}^{5}$ data) we find a set of solutions with ${\ensuremath{\chi}}_{\mathrm{dof}}^{2}=1.69--1.81$ which allows us to assess the systematic uncertainty of the approach.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
