scholarly journals Quantum effects on Higgs-strahlung events at linear colliders within the general two-Higgs-doublet model

2010 ◽  
Vol 81 (11) ◽  
Author(s):  
David López-Val ◽  
Joan Solà ◽  
Nicolás Bernal
Keyword(s):  
Quantum Effects ◽  
Higgs Doublet ◽  
Linear Colliders ◽  
Doublet Model ◽  
Two Higgs Doublet Model

scholarly journals Higgs decays in the two Higgs doublet model: large quantum effects in the decoupling regime

2004 ◽  
Vol 579 (3-4) ◽  
pp. 361-370 ◽  
Author(s):  
A. Arhrib ◽  
M. Capdequi Peyranère ◽  
W. Hollik ◽  
S. Peñaranda
Keyword(s):  
Quantum Effects ◽  
Higgs Doublet ◽  
Doublet Model ◽  
Two Higgs Doublet Model ◽  
Large Quantum

scholarly journals Sources of Charged Higgs Pair through Double or Triple Higgs Production at Linear Colliders

2017 ◽  
Vol 2017 ◽  
pp. 1-7
Author(s):  
Ijaz Ahmed
Keyword(s):  
Cross Sections ◽  
Production Cross ◽  
Higgs Doublet ◽  
Higgs Production ◽  
Type Ii ◽  
Electron Positron ◽  
Charged Higgs ◽  
Linear Colliders ◽  
Doublet Model ◽  
Two Higgs Doublet Model

The production of triple Higgs (H+H-H0), (H+H-h0) and pairwise charged Higgs boson (H+H-) is studied in the context of future linear colliders within the two-Higgs-doublet model (2HDM) type II. The aim is to compare sources of charged Higgs pair through the above processes, that is, double and triple Higgs production. Cross sections are calculated at the leading order in 2HDM type II and Minimal Supersymmetric Standard Model (MSSM). Several orders of magnitude (~104) enhancement are observed in 2HDM compared to MSSM, while no sizable enhancement is seen in muon collider versus electron-positron collider. The analysis is based on a heavy charged Higgs with mass above 500 GeV. It is found that double charged Higgs production cross section (being the same in 2HDM and MSSM) is few femtobarns, while the triple Higgs production cannot exceed a fraction of femtobarn within the parameter space under study.

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 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 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.

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