Isolating systematic effects with beam polarisation at $e^+e^-$ colliders
Abstract
Future high-energy colliders will provide some of the most precise tests of the Standard Model. Statistical uncertainties are expected to improve by orders of magnitude over current measurements. This provides a new challenge in accurately assessing and minimizing systematic uncertainties. Beam polarisation may hold a unique potential to isolate and determine the size of systematic effects. This study aims to set this hypothesis by setting up a combined fit of systematic effect and electroweak observables that can test different configurations of available beam polarisations and luminosities. A framework for this fit is developed. In a first test it fits the luminosity and polarisation with external constraints to 2-fermion and 4-fermion differential distributions. An implementation of a first systematic - the muon acceptance - shows consistent behaviour in this framework. This lays the groundwork for testing the interplay of systematic and physical effects in the presence or absence of beam polarisation.
Cite
@article{arxiv.2105.09691,
title = {Isolating systematic effects with beam polarisation at $e^+e^-$ colliders},
author = {Jakob Beyer and Jenny List},
journal= {arXiv preprint arXiv:2105.09691},
year = {2021}
}
Comments
9 pages, 7 figures, Talk presented at the International Workshop on Future Linear Colliders (LCWS2021), 15-18 March 2021. C21-03-15.1