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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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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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Family Symmetries and Multi Higgs Doublet Models [PDF]
Symmetry, 2020 Imposing a family symmetry on the Standard Model in order to reduce the number of its free parameters, due to the Schur’s Lemma, requires an explicit breaking of this symmetry. To avoid the need for this symmetry to break, additional Higgs doublets can be introduced.
Bartosz Dziewit +3 more
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Symmetry and decoupling in multi Higgs models [PDF]
Physical Review D, 2021 12 ...
Carrôlo, Sérgio +3 more
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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 ...
Darvishi, N., Pilaftsis, A.
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Softly broken symmetries in the 2HDM — an invariant formulation
Journal of High Energy Physics, 2023 Soft breaking of a symmetry requires an invariance of the dimension-4 part of the Lagrangian and non-trivial variation of the lower-dimensional part. However, in general, separation between the dim-4 and lower-dimensional Lagrangian is not invariant with
P. M. Ferreira +3 more
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τ ± νγγ and to probe the fermiophobic Higgs boson with high cutoff scales
Journal of High Energy Physics, 2023 The light fermiophobic Higgs boson h f in the type-I two-Higgs-doublet model can evade the current search programs at the LHC since its production through the quark-antiquark annihilation and gluon fusion is not feasible. The particle can be more elusive
Jinheung Kim +4 more
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Probing the electroweak final state in type I 2HDM at the LHC
Journal of High Energy Physics, 2023 Most of the experimental searches of the non-Standard Model Higgs boson(s) at the LHC rely on the QCD induced production modes. However, in some beyond Standard Model frameworks, the additional Higgs bosons can have fermiophobic behaviour. The type I two
Prasenjit Sanyal, Daohan Wang
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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 ...
González Felipe, Ricardo +4 more
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