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Higgs Width and Couplings at High Energy Muon Colliders with Forward Muon Detection

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arxiv 2401.08756 v1 pith:2RJIZXGF submitted 2024-01-16 hep-ph

Peiran Li , Zhen Liu , Kun-Feng Lyu This is my paper · ORCID
classification hep-ph
keywords muonhiggscollidersenergyforwardcollidercouplingcoupling-width
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

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 coupling-width 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 $|\eta (\mu)|<6$, 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.

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Forward citations

Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. The Neutrino Slice at Muon Colliders

    hep-ph 2024-12 conditional novelty 7.0 of 10

    Beam-induced neutrinos at a muon collider would yield around 10^11 interactions per year in the main detector, enabling precision electroweak and neutrino measurements.

  2. Vector Portals at Future Lepton Colliders

    hep-ph 2024-12 conditional novelty 6.0 of 10

    Future lepton colliders could probe dark photon and L_mu-L_tau vector portals with one to two orders of magnitude better sensitivity than current constraints across masses from tens of GeV to a few TeV.

  3. Probing a Heavy Dark $Z$ Boson at Multi-TeV Muon Colliders: Leveraging the Optimized Recoil Mass Technique

    hep-ph 2025-01 conditional novelty 5.0 of 10

    A 3-10 TeV muon collider could detect a heavy dark Z boson in photon-associated production, reaching kinetic-mixing strengths down to about 10^-3 near the kinematic limit by using resolution-optimized recoil-mass and ...

  4. Electroweak Symmetry Restoration and Radiation Amplitude Zeros

    hep-ph 2024-12 conditional novelty 5.0 of 10

    The paper defines a quantitative measure of electroweak symmetry restoration, δ = M_W/2E, and proposes W±γ, W±Z, and W±H cross-section ratios near radiation amplitude zeros as new high-energy collider observables for ...

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