# Higgs Factories: Higgs-Strahlung versus W-Fusion

## TL;DR

Higgs factories can precisely measure Higgs couplings using Higgs-strahlung and W-fusion processes, with future designs achieving sub-percent accuracy if theoretical uncertainties are managed.

## Contribution

This study compares the impact of Higgs-strahlung and W-fusion processes on coupling precision at future Higgs factories, highlighting their similar performance.

## Key findings

- Future Higgs factories can measure couplings at sub-percent level.
- Both circular and linear designs show comparable performance.
- Controlling theoretical uncertainties is crucial for precision.

## Abstract

Higgs factories will be able to measure Higgs properties, and in particular Higgs couplings with high precision. In a follow-up to an earlier analysis we study the impact of the Higgs-strahlung and vector boson fusion processes on the precision of the couplings determination. Provided theoretical uncertainties can be controlled, future Higgs factories will be able to measure Higgs couplings at the sub-percent level. In spite of their different strengths, base-line circular and linear designs can expect a surprisingly similar performance.