Bottom quark and tau lepton masses in a toy SU(6) model
We study a toy SU ( 6 ) model with the symmetry breaking pattern of the extended 331 symmetry of SU ( 3 ) c ⊗ SU ( 3 ) W ⊗ U ( 1 ) X . A “fermion-Higgs mismatching” symmetry breaking pattern is proposed for more realistic model building. Within such symmetry breaking pattern, only one Higgs doublet...
Gespeichert in:
| Veröffentlicht in: | The European physical journal. C, Particles and fields Particles and fields, 2023-03, Vol.83 (3), p.259 |
|---|---|
| Hauptverfasser: | , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| Zusammenfassung: | We study a toy
SU
(
6
)
model with the symmetry breaking pattern of the extended 331 symmetry of
SU
(
3
)
c
⊗
SU
(
3
)
W
⊗
U
(
1
)
X
. A “fermion-Higgs mismatching” symmetry breaking pattern is proposed for more realistic model building. Within such symmetry breaking pattern, only one Higgs doublet develops vacuum expectation value for the spontaneous electroweak symmetry breaking, and gives tree-level top quark mass. A natural VEV splittings in the 331 breaking Higgs fields gives tree-level masses to both bottom quark and tau lepton. The
125
GeV
SM-like Higgs boson discovered at the LHC can have Yukawa couplings to bottom quark and tau lepton as in the SM prediction, and this suggests the 331 symmetry breaking scale to be
∼
O
(
10
)
TeV
. |
|---|---|
| ISSN: | 1434-6044 1434-6052 |
| DOI: | 10.1140/epjc/s10052-023-11387-0 |