Results 51 to 60 of about 66,565 (179)

TeV-scale seesaw from a multi-Higgs model [PDF]

The European Physical Journal C, 2010
We suggest new simple model of generating tiny neutrino masses through a TeV-scale seesaw mechanism without requiring tiny Yukawa couplings. This model is a simple extension of the standard model by introducing extra one Higgs singlet, and one Higgs doublet with a tiny vacuum expectation value.
Haba, Naoyuki, Hirotsu, Masaki
openaire   +2 more sources

Spontaneous CP Violating Phase as The CKM Matrix Phase

, 2007
We propose that the CP violating phase in the CKM mixing matrix is identical to the CP phases responsible for the spontaneous CP violation in the Higgs potential. A specific multi-Higgs model with Peccei-Quinn (PQ) symmetry is constructed to realize this
A.R. Zhitnitsky, B. Pontecovo, B.H.J. McKellar, C.Q. Geng, D. Chang, D. Chang, D. Chang, E. Braaten, E. Braaten, G. Beall, G.C. Branco, G.C. Branco, G.C. Branco, H. Fusaoka, I.I.Y. Bigi, J.E. Kim, J.F. Gunion, Jing Jiang, K. Babu, Lu-Hsing Tsai, M. Dine, M. Kobayashi, M. Okamoto, M. Shifman, N. Cabibbo, N.G. Deshpande, N.G. Deshpande, P. Ball, R. Akhoury, R.D. Peccei, R.D. Peccei, S. Weinberg, S. Weinberg, S. Weinberg, S.M. Barr, S.M. Barr, Shao-Long Chen, T.D. Lee, T.D. Lee, W.-M. Yao, X.G. He, X.G. He, X.G. He, X.G. He, X.G. He, X.G. He, Xiao-Gang He, Z. Maki   +47 more
core   +1 more source

Multi-Higgs Models: model building, phenomenology and renormalization

, 2021
PhD thesis.
openaire   +2 more sources

Tree-Level Vacuum Stability in Multi Higgs Models [PDF]

Proceedings of International Europhysics Conference on High Energy Physics — PoS(HEP2005), 2007
In the most general model with two Higgs doublets, if a minimum that preserves the $U(1)_{em}$ symmetry exists, then charge breaking (CB) minima cannot occur. The depth of the potential at a stationary point that breaks CB or CP, relative to the $U(1)_{em}$ preserving minimum, is proportional to the squared mass of the charged or pseudoscalar Higgs ...
Barroso, A., Ferreira, P. M., Santos, R.
openaire   +2 more sources

Complex S 3-symmetric 3HDM

Journal of High Energy Physics, 2023
CP violation plays a very important role in nature with implications both for Particle Physics and for Cosmology. Accounting for the observed matter-antimatter asymmetry of the Universe requires the existence of new sources of CP violation beyond the ...
A. Kunčinas, O. M. Ogreid, P. Osland, M. N. Rebelo   +3 more
doaj   +1 more source

Symmetries in multi-Higgs-doublet models

, 2012
We report the recent progress in understanding of symmetries which can be implemented in the scalar sector of electroweak symmetry breaking models with several Higgs doublets. In particular we present the list of finite reparametrization symmetry groups which can appear in the three-Higgs-doublet models.
Ivanov, Igor, Vdovin, Evgeny
openaire   +3 more sources

Yukawa sector of multi-Higgs-doublet models in the presence of Abelian symmetries [PDF]

, 2013
A general method for classifying the possible quark models of a multi-Higgs-doublet model, in the presence of Abelian symmetries, is presented.
Serodio, Hugo
core   +2 more sources

Two-Higgs-doublet model and quark-lepton unification

Journal of High Energy Physics, 2022
We study the Two-Higgs-Doublet Model predicted in the minimal theory for quark-lepton unification that can describe physics at the low scale. We discuss the relations among the different decay widths of the new Higgs bosons and study their phenomenology ...
Pavel Fileviez Pérez, Elliot Golias, Alexis D. Plascencia   +2 more
doaj   +1 more source

Nullification of multi-Higgs threshold amplitudes in the standard model [PDF]

Physics Letters B, 1993
We show that nullification of all tree-order threshold amplitudes involving Higgs particles in the Standard Model occurs, provided that certain equations relating the masses of all existing elementary particles to the mass of the Higgs scalar are satisfied.
Argyres, E. N., Kleiss, R., Papadopoulos, C. G.   +2 more
openaire   +2 more sources

Searches for additional Higgs bosons in multi-top-quarks events at the LHC and the International Linear Collider

Nuclear Physics B, 2015
We study direct searches of additional Higgs bosons in multi-top-quarks events at the LHC Run-II, its luminosity upgraded version with 3000 fb−1, and the International Linear Collider (ILC) with the collision energy of 1 TeV.
Shinya Kanemura, Hiroshi Yokoya, Ya-Juan Zheng   +2 more
doaj   +1 more source