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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
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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
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Constraining multi-Higgs flavour models [PDF]
The European Physical Journal C, 2014 13 pages, 3 figures, title and abstract changed, comments and references added; matches version to appear in The European Physical Journal ...
R. González Felipe +4 more
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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
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The oblique parameters in multi-Higgs-doublet models [PDF]
Nuclear Physics B, 2008 18 pages, 5 ...
Walter Grimus +3 more
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Geometrical CP violation in multi-Higgs models [PDF]
Journal of High Energy Physics, 2012 We introduce several methods to obtain calculable phases with geometrical values that are independent of arbitrary parameters in the scalar potential. These phases depend on the number of scalars and on the order of the discrete non-Abelian group considered.
Ivo de Medeiros Varzielas
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Abelian symmetries in multi-Higgs-doublet models [PDF]
Journal of Physics A: Mathematical and Theoretical, 2012 33 pages, 2 figures; v2: conjecture 3 is proved and becomes theorem 3, more explanations of the main strategy are added, matches the published ...
Igor Ivanov, Venus Keus, E. P. Vdovin
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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.
J. C. Montero +2 more
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CP violation in multi-Higgs supersymmetric models [PDF]
Nuclear Physics B, 1996 We consider supersymmetric extensions of the standard model with two pairs of Higgs doublets. We study the possibility of spontaneous $CP$ violation in these scenarios and present a model where the origin of $CP$ violation is soft, with all the complex phases in the Lagrangian derived from complex masses and vacuum expectation values (VEVs) of the ...
M. Masip, Andrija Rašin
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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 CORFU2019 Proceeding, 21 pages, 6 figures and 2 ...
Neda Darvishi, Apostolos Pilaftsis
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