Numerical evidence for a new dynamical mechanism of elementary particle mass generation has been found by lattice simulation in a simple, yet highly non-trivial SU(3) gauge model where a SU(2) doublet of strongly interacting fermions is coupled to a complex scalar field doublet via a Yukawa and a Wilson-like term. We point out that if, as a next step towards the construction of a realistic beyond-the-Standard-Model model, weak interactions are introduced, then also weak bosons get a mass by the very same non-perturbative mechanism. In this scenario fermion mass hierarchy can be naturally understood owing to the peculiar gauge coupling dependence of the non-perturbatively generated masses. Hence, if the phenomenological value of the mass of the top quark or the weak bosons has to be reproduced, the RGI scale of the theory must be much larger than $Lambda_QCD$. This feature hints at the existence of new strong interactions and particles at a scale $Lambda_T$ of a few TeV. In such a speculative framework the electroweak scale can be derived from the basic scale $Lambda_T$ and the Higgs boson should arise as a bound state in the $WW+ZZ$ channel.

Frezzotti, R., Rossi, G. (2018). Towards models with a unified dynamical mechanism for elementary particle masses. ??????? it.cilea.surplus.oa.citation.tipologie.CitationProceedings.prensentedAt ??????? Lattice 2018 - The 36th Annual International Symposium on Lattice Field Theory, Michigan State University, East Lansing, Michigan, USA [10.22323/1.334.0190].

Towards models with a unified dynamical mechanism for elementary particle masses

Roberto Frezzotti
;
Giancarlo Rossi
2018-11-26

Abstract

Numerical evidence for a new dynamical mechanism of elementary particle mass generation has been found by lattice simulation in a simple, yet highly non-trivial SU(3) gauge model where a SU(2) doublet of strongly interacting fermions is coupled to a complex scalar field doublet via a Yukawa and a Wilson-like term. We point out that if, as a next step towards the construction of a realistic beyond-the-Standard-Model model, weak interactions are introduced, then also weak bosons get a mass by the very same non-perturbative mechanism. In this scenario fermion mass hierarchy can be naturally understood owing to the peculiar gauge coupling dependence of the non-perturbatively generated masses. Hence, if the phenomenological value of the mass of the top quark or the weak bosons has to be reproduced, the RGI scale of the theory must be much larger than $Lambda_QCD$. This feature hints at the existence of new strong interactions and particles at a scale $Lambda_T$ of a few TeV. In such a speculative framework the electroweak scale can be derived from the basic scale $Lambda_T$ and the Higgs boson should arise as a bound state in the $WW+ZZ$ channel.
Lattice 2018 - The 36th Annual International Symposium on Lattice Field Theory
Michigan State University, East Lansing, Michigan, USA
Rilevanza internazionale
26-nov-2018
Settore FIS/02 - FISICA TEORICA, MODELLI E METODI MATEMATICI
English
High Energy Physics - Lattice; High Energy Physics - Lattice; High Energy Physics - Theory
e-Print: arXiv:1811.10326 [hep-lat] Accepted on2019-03-15 for publication in Proceedings of Science PoS(LATTICE2018)190 Published in PoS LATTICE2018 (2018) 190 -------------------------------------------------------------------------------------------------------------------------- 2019-03-15 23:49 Dear Roberto Frezzotti, I am pleased to inform you that your contribution PoS(LATTICE2018)190 (Towards models with an unified dynamical mechanism for elementary particle masses) has been accepted for publication on PoS. Best regards, The 36th Annual International Symposium on Lattice Field Theory Local Organizing Committee
http://arxiv.org/abs/1811.10326v1
Intervento a convegno
Frezzotti, R., Rossi, G. (2018). Towards models with a unified dynamical mechanism for elementary particle masses. ??????? it.cilea.surplus.oa.citation.tipologie.CitationProceedings.prensentedAt ??????? Lattice 2018 - The 36th Annual International Symposium on Lattice Field Theory, Michigan State University, East Lansing, Michigan, USA [10.22323/1.334.0190].
Frezzotti, R; Rossi, G
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/211563
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