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Prospects for light exotic scalar measurements at the e^+e^- Higgs factory

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arxiv 2409.19761 v1 pith:3DNFFUKP submitted 2024-09-29 hep-ph

Prospects for light exotic scalar measurements at the e^+e^- Higgs factory

classification hep-ph
keywords higgsfactorylightscalardecaydifferentmeasurementsproduction
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The physics program of the Higgs factory will focus on measurements of the 125 GeV Higgs boson, with the Higgs-strahlung process being the dominant production channel at 250 GeV. However, production of extra light scalars is still not excluded by the existing experimental data, provided their coupling to the gauge bosons is sufficiently suppressed. Fermion couplings of such a scalar could also be very different from the SM predictions leading to non-standard decay paterns. Presented in this contribution are results from the ongoing studies on prospects of direct light scalar observation at future Higgs factory experiments in different decay channels.

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Cited by 2 Pith papers

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  1. Search for Invisibly Decaying Light Scalars at the FCC-ee

    hep-ph 2026-06 conditional novelty 5.0

    An FCC-ee search for e+e−→Z+invisible scalar could reach σ×BR sensitivities of ~10^-2–10^-1 fb below the Z mass and claims discovery reach up to 80 GeV in a simplified singlet+DM model.

  2. Interpretation of LHC excesses at 95 GeV and 152 GeV in an extended Georgi-Machacek model

    hep-ph 2025-11 unverdicted novelty 4.0

    A minimally extended Georgi-Machacek model accommodates the LHC excesses at 95 GeV and 152 GeV while preserving the 125 GeV Higgs signal and the electroweak rho parameter near unity.