[NCTS Seminar - Particle Physics Journal Club] Leading two-loop corrections to the Higgs di-photon decay in the Inert Doublet Model

  • Event Date: 2025-09-08
  • High energy phenomenology
  • Speaker: Prof. Masashi Aiko (Miyakonojo College)  /  Host:
    Place: NCTS Physics 4F Lecture Hall, Cosmology Hall, NTU

Speaker: Prof. Masashi Aiko (Miyakonojo College)
Talk title: Leading two-loop corrections to the Higgs di-photon decay in the Inert Doublet Model
Time: 2025/09/08 (Mon.) 12:30
Place: NCTS Physics 4F Lecture Hall, Cosmology Hall, NTU

Abstract: 
We study the leading two-loop corrections to the Higgs boson decay into two photons in the Inert Doublet Model (IDM), which contains a scalar dark matter candidate. The IDM can be probed indirectly through precision measurements of the Higgs di-photon decay rate and the Higgs self-coupling. Using the Higgs low-energy theorem, we compute for the first time the leading new-physics two-loop contributions to the di-photon decay rate. Based on these results, we present state-of-the-art theoretical predictions for both observables and evaluate the prospects for testing the IDM at future colliders such as the HL-LHC.

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