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Please use this identifier to cite or link to this item: http://hdl.handle.net/10928/1177

Title: 2HDMにおけるILCでのヒッグス粒子対生成過程
Other Titles: Double Higgs boson production at the ILC in the two-Higgs-doublet model
Authors: 名倉, 琢人
近, 匡
植田, 高寛
柳生, 慶
NAGURA,Takuto
KON, Tadashi
UEDA, Takahiro
YAGYU, Kei
Keywords: di-Higgs boson production
two-Higgs-doublet model
ILC
GRACE
physics beyond the standard model
Issue Date: 1-Jun-2019
Publisher: 成蹊大学理工学部
Abstract: We study the Higgs boson pair production e^+ e^- → ff^^-hh (f ≠ t) in the two-Higgs-doublet model with the softly-broken Z_2 symmetry with the CP-invariance. In the case without the alignment limit, the cross section can be significantly enhanced, i.e., a few hundred percent levels as compared to that in the standard model, due to resonant effects of heavy neutral Higgs bosons. We find the correlation between the enhancement factor of the cross section and the scaling factor of the ff^^-h couplings (k_f) under constraints from the perturbative unitarity, the vacuum stability and the current experimental data at the LHC as well as the electroweak precision data.
URI: http://hdl.handle.net/10928/1177
Appears in Collections:第56巻第1号

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