Analytic forms for the $e^+e^-$ annihilation cross sections around a resonance including initial state radiation
High Energy Physics - Phenomenology
2024-10-01 v2
Abstract
The exact analytic form of cross sections including initial state radiation with Kuraev-Fadin radiative function are obtained for annihilation around a resonance. Despite accounting for vacuum polarization and center-of-mass energy spread effects, the precision remains below 0.1\%, meeting the accuracy requirements of quantum electrodynamics corrections up to . The analytic forms lead to an enhancement in the precision of experimental measurements of physical parameters, such as branching fractions, and demonstrate significantly improved computational efficiency in the regression procedures.
Cite
@article{arxiv.2405.09432,
title = {Analytic forms for the $e^+e^-$ annihilation cross sections around a resonance including initial state radiation},
author = {Baoxin Liu and Zhenyu Zhang and Xiang Zhou},
journal= {arXiv preprint arXiv:2405.09432},
year = {2024}
}
Comments
23 pages, 6 figures