Advanced parametrisations for hadronic form factors
High Energy Physics - Phenomenology
2026-01-30 v2 High Energy Physics - Experiment
High Energy Physics - Lattice
Nuclear Theory
Abstract
The rich analytic structure of hadronic form factors makes a theoretically consistent yet easily applicable parametrisation cumbersome. Consequently, most parametrisations are limited to reproducing the simplest analytic features sufficient to describe form factors on their first Riemann sheet. Here, we introduce two novel form factor parametrisations that allow resonance poles and left-hand cuts on the second Riemann sheet to be studied, while also making the connection to partial-wave amplitudes manifest.
Keywords
Cite
@article{arxiv.2510.25584,
title = {Advanced parametrisations for hadronic form factors},
author = {Nienke C. Balz and Florian Herren and Bastian Kubis and Simon Mutke and Méril Reboud},
journal= {arXiv preprint arXiv:2510.25584},
year = {2026}
}
Comments
29 pages, 11 figures; v2 as published in JHEP, ancillary file with fit parameters added