Speaker
Description
We propose a novel method using the ZZ-fusion channel and forward muon detection at high-energy muon colliders to address the challenge of the Higgs couplingwidth degeneracy. Our approach enables inclusive Higgs rate measurement to 0.75%
at 10 TeV muon collider, breaking the coupling-width degeneracy. Results indicate
the potential to refine Higgs coupling to sub-percent levels and estimate its total
width within (-0.41%, +2.1%). Key insights include the effectiveness of forward
muon tagging in signal-background separation despite broad recoil mass distribution
due to muon energy reconstruction and beam energy spread. The study emphasizes
the significance of muon rapidity coverage up to |η(µ)| < 6, enhancing measurement
precision. Our findings highlight the unique capabilities of high-energy lepton colliders for model-independent Higgs coupling determination and lay the groundwork for
future advancements in muon collider technology and Higgs physics research.
