Speaker
Description
The precision physics programme at the LHC,
particularly measurements of Standard Model parameters like the $W$
boson mass and the weak mixing angle, rely heavily on
accurate theoretical predictions. These measurements employ template-fitting methods
where Monte Carlo (MC) event generators provide templates parameterized by the
fundamental quantity being measured. Theoretical uncertainties are a limiting component,
directly propagating to the final experimental error via the MC templates.
In this contribution, we present the latest developments of the
Z_ew-BMNNPV event generator for the neutral Drell-Yan process at
NLO Electroweak$+$NLO QCD accuracy with matching to parton showers in
the POWHEG framework. We use this tool to study the impact of various electroweak theoretical
uncertainties on key observables used for the weak mixing angle
determination at the LHC and we investigate the role of
electroweak input parameter schemes on the sensitivity to the weak
mixing angle at the electroweak and multi-TeV scale.
