The 16th Particle Physics Phenomenology Workshop

Session

Other Aspects of Particle Physics

15 Jun 2026, 15:45

NTHU

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, 15:45

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...

5. Freeze-in Production of Non-Abelian Millicharged Vector Dark Matter

Dr Van Que Tran (NCTS, National Taiwan University)

15/06/2026, 16:30

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...

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...