https://doi.org/10.1140/epjc/s10052-023-11471-5
Regular Article - Theoretical Physics
Flavour bounds on the flavon of a minimal and a non-minimal 
symmetry
1
Department of Physics, Indian Institute of Technology (BHU), 221005, Varanasi, India
2
Department of Physics, Indian Institute of Technology, 781039, Guwahati, India
Received:
20
December
2022
Accepted:
3
April
2023
Published online:
19
April
2023
We investigate flavour bounds on the 
and 
flavour symmetries. These flavour symmetries are a minimal and a non-minimal forms of the flavour symmetry, that can provide a simple set-up for the Froggatt–Nielsen mechanism. The and flavour symmetries are capable of explaining the fermionic masses and mixing pattern of the standard model including that of the neutrinos. The bounds on the parameter space of the flavon field of the and flavour symmetries are derived using the current quark and lepton flavour physics data and future projected sensitivities of quark and lepton flavour effects. The strongest bounds on the flavon of the symmetry come from the 
mixing. The bounds on the flavour symmetry are stronger than that of the minimal symmetry. The ratio 
provides rather robust bounds on the flavon parameters in the future phase-I and phase-II of the LHCb by leaving only a very small region in the allowed parameter space of the models.
© The Author(s) 2023
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