26 citations · 41 across the 12 of their papers we have counts for
12 papers
Precise bubble wall velocity in a specific phase transition pattern in the CxSM and beyond
Shihang Tang, Fa Peng Huang, Chikako Idegawa
The bubble wall velocity is a key quantity in cosmological first-order phase transitions, with important implications for electroweak baryogenesis, gravitational wave signals, the…
Two Higgs doublet model with a complex singlet scalar and Multi-critical Point Principle
Gi-Chol Cho, Chikako Idegawa, Chiaki Nose
We study a two Higgs doublet model extended by a complex singlet scalar, in which the imaginary part of the singlet serves as a dark matter (DM) candidate. In this model, degenerat…
Model Parameter Reconstruction of Electroweak Phase Transition with TianQin and LISA: Insights from the Dimension-Six Model
Aidi Yang, Chikako Idegawa, Fa Peng Huang
We investigate the capability of TianQin and LISA to reconstruct the model parameters in the Lagrangian of new physics scenarios that can generate an electroweak SFOPT. Taking the…
Primordial Black Hole Formation and Multimessenger Signals in a Complex Singlet Extension of the Standard Model
Fa Peng Huang, Chikako Idegawa, Aidi Yang
We investigate the formation of primordial black holes (PBHs) induced by a first-order electroweak phase transition in a realistic renormalizable framework, the complex singlet ext…
One-loop analysis of dark matter constraints in a complex scalar extension of the Standard Model
Koichi Funakubo, Chikako Idegawa
We investigate the complex singlet extension of the Standard Model, which provides a scalar dark matter candidate. We impose the constraints from the observed relic abundance toget…
Degenerate scalar scenario of two Higgs doublet model with a complex singlet scalar
Gi-Chol Cho, Chikako Idegawa
We study the two Higgs doublet model with a complex singlet scalar whose imaginary part acts as dark matter (DM). The scattering of DM and quarks, mediated by three CP-even scalars…
A complex singlet extension of the Standard Model with a singlet fermion dark matter
Gi-Chol Cho, Chikako Idegawa, Rie Inumiya
We examine a complex singlet scalar extension of the Standard Model (CxSM) with an extra singlet fermion. Both the singlet scalar and fermion are dark matter (DM) candidates. It is…
Electron electric dipole moment and electroweak baryogenesis in a complex singlet extension of the Standard Model with degenerate scalars
Chikako Idegawa, Eibun Senaha
We study the possibility of electroweak baryogenesis in the standard model with a complex scalar field, focusing mainly on a degenerate scalar scenario. In our setup, CP violation…
Analyzing cancellation mechanism of the dark matter-quark scattering in a complex singlet extension of the Standard Model
Gi-Chol Cho, Chikako Idegawa
We investigate a suppression mechanism of dark matter and quark scattering amplitudes in a complex singlet extension of the Standard Model. It has been pointed out that, in a some…
A complex singlet extension of the Standard Model and Multi-critical Point Principle
Gi-Chol Cho, Chikako Idegawa, Rio Sugihara
We study the Multi-critical Point Principle (MPP) in a complex singlet scalar extension of the Standard Model (CxSM). The MPP discussed in this study selects model parameters so th…
CP-violating effects on gravitational waves in a complex singlet extension of the Standard Model with degenerate scalars
Gi-Chol Cho, Chikako Idegawa, Eibun Senaha
We examine CP-violating effects on electroweak phase transition (EWPT) in the standard model with a complex singlet scalar focusing particularly on a scenario where additional scal…
Electroweak phase transition in a complex singlet extension of the Standard Model with degenerate scalars
Gi-Chol Cho, Chikako Idegawa, Eibun Senaha
We study the feasibility of strong first-order electroweak phase transition (EWPT) in a degenerate-scalar scenario of a complex singlet extension of the Standard Model, in which a…