نتایج جستجو برای: 2hdm effect

تعداد نتایج: 1641991  

Journal: :Journal of High Energy Physics 2021

With the hypothesis of minimal flavor violation, we find that there exists a power-aligned relation between Yukawa couplings two scalar doublets in two-Higgs-doublet model with Hermitian matrices. Within such framework, it is found simultaneous explanation anomalies observed electron and muon anomalous magnetic moments can be reached TeV-scale quasi-degenerate Higgs masses, resulting parameter ...

Journal: :Journal of High Energy Physics 2021

A bstract The 2HDM possesses a neutral scalar interaction eigenstate whose tree-level properties coincide with the Standard Model (SM) Higgs boson. In light of LHC data which suggests that observed boson is SM-like, it follows mixing SM other eigenstates should be suppressed, corresponding to so-called alignment limit. exact limit can arise naturally due global symmetry potential. If this softl...

2003
Chao - Shang Huang Shou - hua Zhu

The mixing induced time dependent CP asymmetry, direct CP asymmetry, and branching ratio in B → ΦK S in a model III 2HDM are calculated, in particular, neutral Higgs boson contributions are included. It is shown that satisfying all the relevant experimental constraints, for time dependent CP asymmetry S φK the model III can agree with the present data, s φk = −0.39±0.41, within the 1σ error, an...

2002
Rodolfo Alexander Diaz Sanchez

The Two Higgs Doublet model and its phenomenological implications are discussed. A brief survey on the present status of this model is given. In particular, we concentrate on the Two Higgs Doublet Model with Flavor Changing Neutral Currents. First, we develop some new parametrizations of the 2HDM type III, in such a way that the relation of it with models type I and type II become apparent, bas...

2003
Chao - Shang Huang Shou - hua Zhu

The mixing induced time dependent CP asymmetry, direct CP asymmetry, and branching ratio in B → ΦK S in a model III 2HDM are calculated, in particular, neutral Higgs boson contributions are included. It is shown that satisfying all the relevant experimental constraints, for time dependent CP asymmetry S φK the model III can agree with the present data, S φk = −0.39±0.41, within the 1σ error, an...

1994
Yuval Grossman

We study the most general Multi-Higgs-Doublet Model (MHDM) with Natural Flavor Conservation (NFC). The couplings of a charged scalar H i to up quarks, down quarks and charged leptons depend on three new complex parameters, Xi, Yi and Zi, respectively. We prove relations among these parameters. We carry out a comprehensive analysis of phenomenological constraints on the couplings of the lightest...

Journal: :European Physical Journal Plus 2022

The observability of charged Higgs bosons $$H^{\pm }$$ has been investigated at future lepton collider in type I two-Higgs- doublet model (2HDM) the center mass energy $$\sqrt{s}=1.5$$ TeV. signal process chain is $$ e^{+}e^{-} \rightarrow Z^{*}/ \gamma ^{*}\rightarrow H^{+} H^{-}\rightarrow H W^{+} W^{-}\rightarrow b {\overline{b}} j j$$ . proceeds through virtual and Z boson exchange s channe...

Journal: :Communications in Theoretical Physics 2022

Abstract We briefly survey several typical CP-conserving two-Higgs-doublet models (2HDMs) in light of current experiments. First we derive the masses and couplings mass eigenstates from Lagrangians. Then analyze constraints theory oblique electroweak parameters. Finally, delineate status 2HDM LHC searches, dark matter detections muon g − 2 measurement.

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