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The 16th Particle Physics Phenomenology Workshop

15–18 Jun 2026
NTHU
Asia/Taipei timezone

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Session

Other Aspects of Particle Physics

15 Jun 2026, 14:30
Physics Building R124 (NTHU)

Physics Building R124

NTHU

Conveners

Other Aspects of Particle Physics

  • Cheng-Wei Chiang (Natl. Taiwan U)

Other Aspects of Particle Physics

  • Wen-Chen Chang (Institute of Physics, Academia Sinica, Taiwan)

Other Aspects of Particle Physics

  • Hsiang-nan Li (Academia Sinica)

Presentation materials

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  1. 3. Probing the Higgs Self-coupling via VBF Di-Higgs Production at a Multi-TeV Muon Collider
    Soojin Lee (National Tsing Hua University)
    15/06/2026, 14:30
    Other Aspects of Particle Physics
    Invited Presentation

    We investigate the sensitivity to the Higgs trilinear coupling (κ_λ) through di-Higgs production via vector-boson fusion (VBF) at a multi-TeV muon collider. A primary advantage of the muon collider environment is the significantly suppressed QCD background compared to hadron colliders, which provides a remarkably clean experimental signature for probing electroweak processes. We perform a...

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  2. 23. New physics in toponium's shadow?
    Jinheung Kim (KIAS)
    16/06/2026, 10:30
    Other Aspects of Particle Physics
    Invited Presentation

    Recently, the CMS and ATLAS collaborations have reported a ttbar resonance excess near the ttbar threshold with above 5 sigma deviation from the SM pQCD prediction. This excess may be interpreted as a new pseudoscalar particle interacting with the top quark. Alternatively, it can be explained within the SM framework through toponium production—the bound state of a top quark pair, which can...

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  3. 49. Probing the General 2HDM with Flavor Violation Through $A \to ZH$ and $H^+ \to W^+ H$
    Mohamed Krab
    16/06/2026, 11:15
    Other Aspects of Particle Physics
    Invited Presentation

    We discuss the discovery prospects for a second Higgs doublet through the decay channels $A \to ZH$ and $H^+ \to W^+ H$. These decays are particularly relevant in two Higgs doublet models (2HDM) scenarios featuring a strong first-order electroweak phase transition, a necessary condition for successful electroweak baryogenesis. Within the general 2HDM, which allows flavor-changing neutral Higgs...

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  4. 5. Freeze-in Production of Non-Abelian Millicharged Vector Dark Matter
    Dr Van Que Tran (NCTS, National Taiwan University)
    18/06/2026, 09:00
    Other Aspects of Particle Physics
    Invited Presentation

    We present the first predictive realization of vector freeze-in dark matter from a hidden non-Abelian gauge sector, spontaneously broken to a residual $U(1)$ with a massless dark photon mediator. A massive dark vector particle-antiparticle pair acquires small millicharges via a dimension-five kinetic mixing operator that induces a dimension-four mixing term with effective coefficient...

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  5. 56. Cosmological consequences of axion models
    Andrew Cheek (Tsung-Dao Lee Institute)
    18/06/2026, 09:45
    Other Aspects of Particle Physics
    Invited Presentation

    In this talk I will discuss the non-standard cosmology that can arise when one considers the UV physics that leads to light axions. I will focus on the case of `preferred axion models’, these are models that are consistent with post-inflationary symmetry breaking and current cosmological observations. Previously, the number of simple models that do not have a domain wall problem was thought to...

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