Results 41 to 50 of about 66,565 (179)
Nonstandard Yukawa Couplings and Higgs Portal Dark Matter [PDF]
, 2015 We study the implications of non-standard Higgs Yukawa couplings to light quarks on Higgs-portal dark matter phenomenology. Saturating the present experimental bounds on up-quark, down-quark, or strange-quark Yukawa couplings, the predicted direct dark ...
Bishara, Fady +3 more
core +2 more sources
Benchmarking di-Higgs production in various extended Higgs sector models
Journal of High Energy Physics, 2022 We present a comprehensive study on Higgs pair production in various archetypical extended Higgs sectors such as the real and the complex 2-Higgs-Doublet Model, the 2-Higgs-Doublet Model augmented by a real singlet field and the Next-to-Minimal ...
Hamza Abouabid +6 more
doaj +1 more source
Symmetry and mass degeneration in multi-Higgs-doublet models [PDF]
Journal of High Energy Physics, 2011 20 pages.
Olaussen, Kåre +2 more
openaire +6 more sources
, 1992 We investigate the possibility of a multi-Higgs doublet model where the lightest neutral Higgs boson ($h^0$) decouples from the fermion sector. We are partially motivated by the four $\ell^+\ell^-\gamma\gamma$ events with $M_{\gamma\gamma}\simeq60$\,GeV ...
Barger, V. +3 more
core +3 more sources
CP violation in a model with Higgs triplets
Journal of High Energy Physics, 2023 We discuss CP-violation in a model with a real and a complex isospin triplet Higgs fields without introducing any symmetries except for the electroweak gauge symmetry.
Ting-Kuo Chen +2 more
doaj +1 more source
The oblique parameters in multi-Higgs-doublet models [PDF]
Nuclear Physics B, 2008 18 pages, 5 ...
Grimus, W. +3 more
openaire +2 more sources
CP-violation, asymmetries and interferences in t t ¯ ϕ $$ t\overline{t}\phi $$
Journal of High Energy Physics, 2022 In this paper, we use the associated production of top-quark pairs ( t t ¯ $$ t\overline{t} $$ ) with a generic scalar boson (ϕ) at the LHC (pp → t t ¯ ϕ $$ t\overline{t}\phi $$ ) to explore the sensitivity of a large set of observables to the sign of ...
Duarte Azevedo +3 more
doaj +1 more source
New tools for dissecting the general 2HDM
Journal of High Energy Physics, 2023 Two Higgs doublet models (2HDM) provide the low energy effective theory (EFT) description in many well motivated extensions of the Standard Model. It is therefore relevant to study their properties, as well as the theoretical constraints on these models.
Henning Bahl +4 more
doaj +1 more source
, 1999 Abstract The scalar sector of the standard model (SM) consists of only one doublet with weak hypercharge Y = 1/2. Most extensions of the SM include an enlargement of the Higgs sector. There are many theoretical motivations to enlarge the scalar sector of the standard electroweak theory, even if one only considers extensions of that ...
Gustavo Castelo Branco +2 more
openaire +1 more source
Scalar resonances in leptophilic multi-Higgs-boson models [PDF]
Physical Review D, 1999 We show that the Higgs resonance can be amplified in a 3-3-1 model with a multi-Higgs-boson ''lepto- philic'' scalar sector. This would allow the observation of the Higgs particle in muon colliders even for Higgs boson masses considerably higher than the ones expected to be seen in the electroweak standard model framework.
Montero, J. C., De, C. A., Pleitez, V.
openaire +3 more sources