The hadronic contribution to the running of the electromagnetic coupling and electroweak mixing angle
Abstract
As present and future experiments, on both the energy and precision frontiers, look to identify new physics beyond the Standard Model, we require more precise determinations of fundamental quantities, like the QED and electroweak couplings at various momenta. These can be obtained either entirely from experimental measurements, or from one such measurement at a particular virtuality combined with the couplings' virtuality dependence computed within the SM. Thus, a precise, entirely theoretical determination of the running couplings is highly desirable, even more since the preliminary results of the E989 experiment in Fermilab were published. We give results for the hadronic contribution to the QED running coupling and weak mixing angle in the space-like energy region with a total relative uncertainty of at energies , and at .
Keywords
Cite
@article{arxiv.2109.04537,
title = {The hadronic contribution to the running of the electromagnetic coupling and electroweak mixing angle},
author = {Teseo San José and Marco Cè and Antoine Gérardin and Georg von Hippel and Harvey B. Meyer and Kohtaroh Miura and Konstantin Ottnad and Andreas Risch and Jonas Wilhelm and Hartmut Wittig},
journal= {arXiv preprint arXiv:2109.04537},
year = {2022}
}
Comments
9 pages, 3 figures, talk presented at the 38th International Symposium on Lattice Field Theory, 26th-30th July 2021, Zoom/Gather@Massachusetts Institute of Technology