Bs→l+l−in a type-II two-Higgs-doublet model and the minimal supersymmetric standard model

2001 ◽  
Vol 63 (11) ◽  
Author(s):  
Chao-Shang Huang ◽  
Liao Wei ◽  
Qi-Shu Yan ◽  
Shou-Hua Zhu
2018 ◽  
Vol 98 (3) ◽  
Author(s):  
Lei Wang ◽  
Rongle Shi ◽  
Xiao-Fang Han ◽  
Bin Zhu

1989 ◽  
Vol 04 (28) ◽  
pp. 2757-2766 ◽  
Author(s):  
THOMAS G. RIZZO

Although absent at the tree level in models with only doublet and singlet Higgs representations, the WZH coupling can be induced at the one-loop level. We examine the size of this induced coupling in the two Higgs doublet model due to fermion as well as Higgs/gauge boson loops. Such couplings could provide a new mechanism for charged Higgs production at colliders and are ‘backgrounds’ to new physics beyond the Standard Model. We find, however, that these couplings are very weak for all regions of the parameter space explored.


2013 ◽  
Vol 2013 (7) ◽  
Author(s):  
Otto Eberhardt ◽  
Ulrich Nierste ◽  
Martin Wiebusch

2008 ◽  
Vol 23 (10) ◽  
pp. 721-725 ◽  
Author(s):  
ERNEST MA

Adding a second scalar doublet (η+, η0) and three neutral singlet fermions N1, 2, 3 to the Standard Model of particle interactions with a new Z2 symmetry, it has been shown that [Formula: see text] or [Formula: see text] is a good dark-matter candidate and seesaw neutrino masses are generated radiatively. A supersymmetric U(1) gauge extension of this new idea is proposed, which enforces the usual R-parity of the Minimal Supersymmetric Standard Model, and allows this new Z2 symmetry to emerge as a discrete remnant.


2020 ◽  
Vol 245 ◽  
pp. 06022
Author(s):  
Filip Rajec ◽  
Wei Su ◽  
Martin White ◽  
Anthony G. Williams

In this work, we present preliminary results of a global fit of the typeII two-Higgs-doublet model (2HDM) with the tool GAMBIT. Our study includes various constraints, including the theoretical constraints (unitarity, perturbativity and vacuum stability), Higgs searches at colliders, electroweak physics and flavour constraints. With the latest experimental results, our results not only confirm past studies but also go further in probing the model. We find, for example, that the measurements of B→K*µ+µ− angular observables cannot be explained in the type-II 2HDM.


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