https://doi.org/10.1051/epjconf/202429203003
Up and down the Riemann surfaces of the Λ baryon form factors
1 Dipartimento di Fisica e Geologia, 06123 Perugia, Italy
2 INFN Sezione di Perugia, 06123 Perugia, Italy
3 DPhN, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette Cedex, France
* e-mail: simone.pacetti@unipg.it
** e-mail: egle.tomasi@cea.fr
*** e-mail: olga.shekhovtsova@pg.infn.it
Published online: 14 March 2024
The recent measurement of the modulus and phase of the ratio GΛE/GΛM, between the electric and the magnetic Λ form factors, performed by the BESIII experiment, offers the unique possibility of exploring for the first time ever the complex structure of this form factor ratio. The investigation is made possible by a dispersive procedure based on analyticity and a set of firstprinciple constraints, that is defined ad hoc.
© 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.
