Theory Requirements and Possibilities for the FCC-ee and other Future High Energy and Precision Frontier Lepton Colliders

TL;DR

This paper discusses the theoretical challenges and requirements for future high-energy lepton colliders like FCC-ee, emphasizing the need for collaborative efforts to achieve the necessary precision in calculations.

Contribution

It analyzes the current status and outlines the theoretical demands and potential methods to meet the precision goals of FCC-ee and similar future colliders.

Findings

Achieving required precision demands about 500 man-years of collaborative effort.

Novel computational methods are needed to match experimental accuracies.

A distributed global effort can fulfill the theoretical challenges.

Abstract

The future lepton colliders proposed for the High Energy and Precision Frontier set stringent demands on theory. The most ambitious, broad-reaching and demanding project is the FCC-ee. We consider here the present status and requirements on precision calculations, possible ways forward and novel methods, to match the experimental accuracies expected at the FCC-ee. We conclude that the challenge can be tackled by a distributed collaborative effort in academic institutions around the world, provided sufficient support, which is estimated to about 500 man-years over the next 20 years.