scholarly journals Leading Yukawa corrections to Higgs production associated with a tagged bottom-antibottom pair in the standard model at the CERN LHC

2008 ◽  
Vol 77 (3) ◽  
Author(s):  
F. Boudjema ◽  
Duc Ninh Le
Keyword(s):  
Standard Model ◽  
Higgs Production ◽  
The Standard Model

TeV Scale B – L Phenomenology at LHC

2007 ◽  
Vol 22 (31) ◽  
pp. 5889-5908 ◽  
Author(s):  
M. Abbas ◽  
W. Emam ◽  
S. Khalil ◽  
M. Shalaby
Keyword(s):  
Standard Model ◽  
Gauge Boson ◽  
Cross Sections ◽  
Branching Ratios ◽  
Higgs Production ◽  
Neutrino Masses ◽  
Natural Explanation ◽  
The Standard Model ◽  
The Cross

We present the phenomenology of the low scale U(1)B–L extension of the standard model and its implications at LHC. We show that this model provides a natural explanation for the presence of three right-handed neutrinos and can naturally account the observed neutrino masses and mixing. We study the decay and production of the extra gauge boson and the SM singlet scalar (heavy Higgs) predicted in this type of models. We find that the cross sections of the SM-like Higgs production are reduced by ~ 20% – 30%, while its decay branching ratios remain intact. The extra Higgs has relatively small cross sections and the branching ratios of Z′ → l+l− are of order ~ 20% compared to ~ 3% of the SM results.

scholarly journals Gluon-fusion Higgs production in the Standard Model Effective Field Theory

2017 ◽  
Vol 2017 (12) ◽  
Author(s):  
Nicolas Deutschmann ◽  
Claude Duhr ◽  
Fabio Maltoni ◽  
Eleni Vryonidou
Keyword(s):  
Field Theory ◽  
Standard Model ◽  
Effective Field Theory ◽  
Gluon Fusion ◽  
Effective Field ◽  
Higgs Production ◽  
The Standard Model

scholarly journals Testing anomalous $$H-W$$ couplings and Higgs self-couplings via double and triple Higgs production at $$e^+e^-$$ colliders

2021 ◽  
Vol 81 (3) ◽  
Author(s):  
M. Gonzalez-Lopez ◽  
M. J. Herrero ◽  
P. Martinez-Suarez
Keyword(s):  
Standard Model ◽  
Higgs Field ◽  
Effective Field ◽  
Higgs Production ◽  
Beyond The Standard Model ◽  
Effective Lagrangian ◽  
The Standard Model ◽  
Non Linear ◽  
First Time ◽  
Chiral Lagrangian

AbstractIn the present work we study the implications at the future $$e^+e^-$$ e + e - colliders of the modified interaction vertices WWH, WWHH, HHH and HHHH within the context of the non-linear effective field theory given by the Electroweak Chiral Lagrangian. These vertices are given by four parameters, a, b, $$\kappa _3$$ κ 3 and $$\kappa _4$$ κ 4 , respectively, that are independent and without any constraint from symmetry considerations in this non-linear effective Lagrangian context, given the fact the Higgs field is a singlet. This is in contrast to the Standard Model, where the vertices are related by $$V_{WWH}^\mathrm{SM}=v V_{WWHH}^\mathrm{SM}$$ V WWH SM = v V WWHH SM and $$V_{HHH}^\mathrm{SM}=v V_{HHHH}^\mathrm{SM}$$ V HHH SM = v V HHHH SM , with $$v=246$$ v = 246 GeV. We investigate the implications of the absence of these relations in the Electroweak Chiral Lagrangian case. We explore the sensitivity to these Higgs anomalous couplings in the two main channels at these colliders: double and triple Higgs production (plus neutrinos). Concretely, we study the access to a and b in $$e^+e^- \rightarrow HH \nu {\bar{\nu }}$$ e + e - → H H ν ν ¯ and the access to $$\kappa _3$$ κ 3 and $$\kappa _4$$ κ 4 in $$e^+e^- \rightarrow HHH \nu {\bar{\nu }}$$ e + e - → H H H ν ν ¯ . Our study of the beyond the Standard Model couplings via triple Higgs boson production at $$e^+e^-$$ e + e - colliders is novel and shows for the first time the possible accessibility to the quartic Higgs self-coupling.

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