https://doi.org/10.1051/epjconf/202429102006
N*(1520) transition form factors from dispersion theory
Institutionen för fysik och astronomi, Uppsala universitet, Box 516, S-75120 Uppsala, Sweden
* e-mail: di.an@physics.uu.se
Published online: 16 February 2024
The electromagnetic transition form factors (TFFs) of the nucleon provide important information on the internal structure of hadrons. A model-independent dispersive calculation of the electro magnetic TFFs N*(1520) → N at low energies is presented. Taking pion rescattering into consideration, we derived dispersive relations for the N*(1520) → N TFFs that relate space-like and time-like regions from the first principles. Based on the space-like data from JLab and hadronic data measured by HADES, we make predictions for TFFs in the time-like region. Our predictions can be tested in future experi ments (e.g. HADES).
© The Authors, published by EDP Sciences, 2024
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.
