Results 11 to 20 of about 1,432,146 (217)
Symmetries for standard model alignment in multi-Higgs doublet models [PDF]
Physical Review D, 2016 We derive the complete set of continuous maximal symmetries for Standard Model (SM) alignment that may occur in the tree-level scalar potential of multi-Higgs Doublet Models, with $n > 2$ Higgs doublets.
A. Pilaftsis
semanticscholar +8 more sources
Nondecoupling in multi-Higgs doublet models [PDF]
European Physical Journal C: Particles and Fields, 2020 We consider models with any number of Higgs doublets and study the conditions for decoupling. We show that, under very general circumstances, all the quadratic coefficients of the scalar potential must be present, except in special cases, which include ...
Francisco Faro +2 more
doaj +5 more sources
Multi-Higgs-doublet models and singular alignment [PDF]
Journal of High Energy Physics, 2019 We consider a 4-Higgs-doublet model in which each Higgs doublet gives mass to one of the fermion sets {m t }, {m b , m τ , m c }, {m μ , m s }, and {m d , m u , m e }. The sets have the feature that within each of them the masses are similar.
Werner Rodejohann +1 more
doaj +6 more sources
The flavor puzzle in multi-Higgs models [PDF]
Journal of High Energy Physics, 2010 We reconsider the flavor problem in the models with two Higgs doublets. By studying two generation toy models, we look for flavor basis independent constraints on Yukawa couplings that will give us the mass hierarchy while keeping all Yukawa couplings of
A. E. Blechman, A. Petrov, G. Yeghiyan
semanticscholar +4 more sources
Flavour alignment in multi-Higgs-doublet models [PDF]
Journal of High Energy Physics, 2017 Extended electroweak scalar sectors containing several doublet multiplets require flavour-aligned Yukawa matrices to prevent the appearance at tree level of unwanted flavour-changing neutral-current transitions. We analyse the misalignment induced by one-
Ana Peñuelas, Antonio Pich
doaj +5 more sources
A new avenue to charged Higgs discovery in multi-Higgs models [PDF]
Journal of High Energy Physics, 2013 A bstractCurrent searches for the charged Higgs at the LHC focus only on the τν, cs, and tb final states. Instead, we consider the process pp → Φ → W±H∓ → W+W−A where Φ is a heavy neutral Higgs boson, H± is a charged Higgs boson, and A is a light Higgs ...
R. Dermisek +3 more
semanticscholar +6 more sources
Discrete and continuous symmetries in multi-Higgs-doublet models [PDF]
Physical Review D, 2008 We consider the Higgs sector of multi-Higgs-doublet models in the presence of simple symmetries relating the various fields. We construct basis invariant observables which may in principle be used to detect these symmetries for any number of doublets.
G. C. Branco +2 more
core +4 more sources
Minimal flavour violation and multi-Higgs models [PDF]
Physics Letters B, 2009 We propose an extension of the hypothesis of Minimal Flavour Violation (MFV) to general multi-Higgs models without the assumption of Natural Flavour Conservation (NFC) in the Higgs sector.
F. Botella, G. Branco, M. N. Rebelo
semanticscholar +6 more sources
Natural Alignment in Multi-Higgs Doublet Models [PDF]
Proceedings of Corfu Summer Institute 2019 "School and Workshops on Elementary Particle Physics and Gravity" — PoS(CORFU2019), 2020 We present the complete set of continuous maximal symmetries that the potential of an $n$-Higgs Doublet Model ($n$HDM) should satisfy for natural Standard Model (SM) alignment.
N. Darvishi, A. Pilaftsis
semanticscholar +5 more sources
The invariant space of multi-Higgs doublet models [PDF]
Journal of High Energy Physics, 2021 In a model with more than one scalar doublet, the parameter space encloses both physical and unphysical information. Invariant theory provides a detailed description of the counting and characterization of the physical parameter space. The Hilbert series
M. Bento
semanticscholar +5 more sources