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T: Fachverband Teilchenphysik
T 34: QCD theory II
T 34.6: Vortrag
Dienstag, 31. März 2020, 18:15–18:30, H-ÜR 1
NLO calculations of Higgs decays in various extended Higgs sectors — Shinya Kanemura1, Mariko Kikuchi2, Kentarou Mawatari3, •Kodai Sakurai4, and Kei Yagyu1 — 1Osaka University, Osaka, Japan — 2Kitakyushu College, Kitakyushu, Japan — 3Iwate University, Iwate, Japan — 4Karlsruhe Insitute of Technology, Karlsruhe, Germany
Precise measurements of the discovered Higgs boson is one of important ways to explore the shape of the Higgs sector. We calculated decay branching ratios of the Higgs boson with full next-to-leading-order (NLO) EW and NNLO QCD corrections in various extended Higgs models, such as the singlet extension of the standard model, 4 types of two Higgs doublet models and the inert doublet model. Then, we implemented the analytic results into H-COUP, which is a computation program for the Higgs boson developed by us. In this talk, we will describe the impact of loop contributions of additional Higgs bosons for the decay branching ratios. We will also discuss whether or not above extended Higgs models are discriminated by precise measurements of the branching ratios at future lepton colliders.