Smallness of neutrino masses and leptogenesis in 331 composite Higgs model
Fuente:
arXiv
Salvato in:
| Autore principale: | |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2025
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866915754363846656 |
|---|---|
| author | Nevzorov, Roman |
| author_facet | Nevzorov, Roman |
| contents | We consider 331 composite Higgs model (CHM3) in which the Lagrangian of the strongly coupled sector is invariant with respect to global SU(3)_C \times SU(3)\times U(1)_6 symmetry that can originate from SU(6) subgroup of E_6 and contains the gauge group of the standard model (SM) as a subgroup. The breakdown of the approximate SU(3)\times U(1)_6 symmetry down to SU(2)_W\times U(1)_Y subgroup around the scale f\sim 10 TeV results in a set of pseudo--Nambu--Goldstone bosons (pNGBs) that, in particular, involves Higgs doublet. The generation of the masses of the SM fermions in the CHM3 is discussed. We argue that approximate U(1)_L and discrete Z_2 symmetries may give rise to tiny masses of the left--handed neutrinos and several composite fermions with masses 1-2 TeV. The lepton and baryon asymmetries can be generated within the CHM3 via the out--of equilibrium decays of extra Majorana particle into the Higgs doublet and these composite fermions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_13245 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Smallness of neutrino masses and leptogenesis in 331 composite Higgs model Nevzorov, Roman High Energy Physics - Phenomenology General Relativity and Quantum Cosmology High Energy Physics - Experiment High Energy Physics - Lattice High Energy Physics - Theory We consider 331 composite Higgs model (CHM3) in which the Lagrangian of the strongly coupled sector is invariant with respect to global SU(3)_C \times SU(3)\times U(1)_6 symmetry that can originate from SU(6) subgroup of E_6 and contains the gauge group of the standard model (SM) as a subgroup. The breakdown of the approximate SU(3)\times U(1)_6 symmetry down to SU(2)_W\times U(1)_Y subgroup around the scale f\sim 10 TeV results in a set of pseudo--Nambu--Goldstone bosons (pNGBs) that, in particular, involves Higgs doublet. The generation of the masses of the SM fermions in the CHM3 is discussed. We argue that approximate U(1)_L and discrete Z_2 symmetries may give rise to tiny masses of the left--handed neutrinos and several composite fermions with masses 1-2 TeV. The lepton and baryon asymmetries can be generated within the CHM3 via the out--of equilibrium decays of extra Majorana particle into the Higgs doublet and these composite fermions. |
| title | Smallness of neutrino masses and leptogenesis in 331 composite Higgs model |
| topic | High Energy Physics - Phenomenology General Relativity and Quantum Cosmology High Energy Physics - Experiment High Energy Physics - Lattice High Energy Physics - Theory |
| url | https://arxiv.org/abs/2509.13245 |