Theory requirements for SM Higgs and EW precision physics at the FCC-ee

TL;DR

This paper discusses the current status and future needs of theoretical predictions for Higgs and electroweak precision measurements at the FCC-ee collider, emphasizing the importance of improving theoretical accuracy to match experimental precision.

Contribution

It summarizes the current theoretical predictions within the Standard Model and outlines necessary improvements and tools for future high-precision Higgs and electroweak measurements at FCC-ee.

Findings

Current SM predictions are close but need refinement for FCC-ee precision

Tools for theoretical calculations are being developed and improved

Simulation frameworks are essential for the Higgs and EW program

Abstract

High precision experimental measurements of the properties of the Higgs boson at $\sim$ 125 GeV as well as electroweak precision observables such as the W -boson mass or the effective weak leptonic mixing angle are expected at future $e^+e^-$ colliders such as the FCC-ee. This high anticipated precision has to be matched with theory predictions for the measured quantities at the same level of accuracy. We briefly summarize the status of these predictions within the Standard Model (SM) and of the tools that are used for their determination. We outline how the theory predictions will have to be improved in order to reach the required accuracy, and also comment on the simulation frameworks for the Higgs and EW precision program.