Results 151 to 160 of about 1,717 (172)

Minimal flavour violation and multi-Higgs models

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2010
We propose an extension of the hypothesis of Minimal Flavour Violation (MFV) to general multi-Higgs Models without the assumption of Natural Flavour Conservation in the Higgs sector. We study in detail under what conditions the neutral Higgs couplings are only functions of $V_{CKM}$ and propose a MFV expansion for the neutral Higgs couplings to ...
M N Rebelo, G C Branco, F J Botella
exaly   +6 more sources

Classifying accidental symmetries in multi-Higgs doublet models [PDF]

Physical Review D, 2020
33 pages and 2 ...
Apostolos Pilaftsis, Neda Darvishi
exaly   +4 more sources

Symmetry and mass degeneration in multi-Higgs-doublet models [PDF]

Journal of High Energy Physics, 2011
20 pages.
Per Osland, Osland P
exaly   +7 more sources

Frustrated symmetries in multi-Higgs-doublet models [PDF]

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2011
7 pages, no ...
Igor P Ivanov, Venus Keus
exaly   +4 more sources

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. Our results generalize the symmetries of SM alignment, without decoupling of large mass scales or fine-tuning, previously obtained in the context of ...
Apostolos Pilaftsis
exaly   +5 more sources

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Multi‐Higgs models and CP violation

Fortschritte Der Physik, 2011
AbstractIn this talk the question of how to obtain conditions for a given Higgs potential to conserve CP, in the case of multi‐Higgs models, is addressed. Higgs basis invariant conditions are discussed for the case of two Higgs doublets.
exaly   +2 more sources

A precision constraint on multi-Higgs-doublet models [PDF]

Journal of Physics G: Nuclear and Particle Physics, 2008
We derive a general expression for Delta rho (or, equivalently, for the oblique parameter T) in the SU(2) x U(1) electroweak model with an arbitrary number of scalar SU(2) doublets, with hypercharge +-1/2, and an arbitrary number of scalar SU(2) singlets.
Odd Magne Ogreid, Per Osland, Luis Lavoura   +2 more
exaly   +4 more sources

Family symmetries and alignment in multi-Higgs doublet models

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2011
The exact alignment of the Yukawa structures on multi-Higgs doublet models provides cancellation of tree-level flavour changing couplings of neutral scalar fields. We show that family symmetries can provide a suitable justification for the Yukawa alignment.
Ivo De Medeiros Varzielas
exaly   +3 more sources

Higgs masses in the standard, multi-Higgs and supersymmetric models

Annals of Physics, 1983
Marc Sher, Ricardo A Flores
exaly   +2 more sources

Discrete and continuous symmetries in multi-Higgs-doublet models [PDF]

Physical Review D, 2008
13 pages, RevTex, references ...
João Silva, Pedro Ferreira
exaly   +3 more sources