scholarly journals Signals of new gauge bosons in gauged two higgs doublet model

2018 ◽  
Vol 78 (8) ◽  
Author(s):  
Wei-Chih Huang ◽  
Hiroyuki Ishida ◽  
Chih-Ting Lu ◽  
Yue-Lin Sming Tsai ◽  
Tzu-Chiang Yuan
Keyword(s):  
Higgs Doublet ◽  
Gauge Bosons ◽  
Doublet Model ◽  
Two Higgs Doublet Model

scholarly journals Leptonic g − 2 anomaly in an extended Higgs sector with vector-like leptons

2021 ◽  
Vol 2021 (11) ◽  
Author(s):  
Hrishabh Bharadwaj ◽  
Sukanta Dutta ◽  
Ashok Goyal
Keyword(s):  
Parameter Space ◽  
Dipole Moments ◽  
Higgs Sector ◽  
Higgs Doublet ◽  
Gauge Bosons ◽  
Complex Scalar ◽  
Complex Scalar Field ◽  
Doublet Model ◽  
Two Higgs Doublet Model ◽  
Extended Higgs Sector

Abstract We address the observed discrepancies in the anomalous magnetic dipole moments (MDM) of the muon and electron by extending the inert two Higgs Doublet Model (2HDM) with SM gauge singlet complex scalar field and singlet Vector-like Lepton (VLL) field. We obtain the allowed parameter space constrained from the Higgs decays to gauge Bosons at LHC, LEP II data and electro-weak precision measurements. The muon and electron MDM’s are then explained within a common parameter space for different sets of allowed couplings and masses of the model particles.

scholarly journals Interplay of New Physics effects in (g − 2)ℓ and h → ℓ+ℓ− — lessons from SMEFT

2021 ◽  
Vol 2021 (6) ◽  
Author(s):  
Svjetlana Fajfer ◽  
Jernej F. Kamenik ◽  
M. Tammaro
Keyword(s):  
Closed Operator ◽  
Higgs Doublet ◽  
New Physics ◽  
Effective Field ◽  
Tree Level ◽  
Electroweak Symmetry ◽  
Scalar Leptoquark ◽  
Doublet Model ◽  
The One ◽  
Two Higgs Doublet Model

Abstract We explore the interplay of New Physics (NP) effects in (g− 2)ℓ and h→ℓ+ℓ− within the Standard Model Effective Field Theory (SMEFT) framework, including one-loop Renormalization Group (RG) evolution of the Wilson coefficients as well as matching to the observables below the electroweak symmetry breaking scale. We include both the leading dimension six chirality flipping operators including a Higgs and SU(2)L gauge bosons as well as four-fermion scalar and tensor operators, forming a closed operator set under the SMEFT RG equations. We compare present and future experimental sensitivity to different representative benchmark scenarios. We also consider two simple UV completions, a Two Higgs Doublet Model and a single scalar LeptoQuark extension of the SM, and show how tree level matching to SMEFT followed by the one-loop RG evolution down to the electroweak scale can reproduce with high accuracy the (g−2)ℓ and h→ℓ+ℓ− contributions obtained by the complete one- and even two-loop calculations in the full models.

scholarly journals THE EFFECTS OF NON-UNIVERSAL EXTRA DIMENSIONS ON THE $\tau\rightarrow\mu\bar\nu_i\nu_i$ DECAY

2005 ◽  
Vol 20 (24) ◽  
pp. 1845-1857 ◽  
Author(s):  
E. O. ILTAN
Keyword(s):  
Extra Dimension ◽  
Extra Dimensions ◽  
Branching Ratio ◽  
Higgs Doublet ◽  
Doublet Model ◽  
Two Higgs Doublet Model

We study [Formula: see text], i = e, μ, τ decays in the two-Higgs doublet model, with the inclusion of one and two spatial non-universal extra dimensions. We observe that the branching ratio is sensitive to two extra dimensions in contrary to a single extra dimension.

scholarly journals Neutron electric dipole moment in two higgs doublet model

1995 ◽  
Vol 39 (2-3) ◽  
pp. 276-278
Author(s):  
T. Hayashi ◽  
Y. Koide ◽  
M. Matsuda ◽  
M. Tanimoto
Keyword(s):  
Dipole Moment ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Higgs Doublet ◽  
Neutron Electric Dipole Moment ◽  
Doublet Model ◽  
Two Higgs Doublet Model
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