PT Journal
AU Lopez-Ibañez, ML
   Melis, A
   Jay Perez, M
   Rahat, MH
   Vives, O
TI Constraining low-scale flavor models with (g-2)(mu) and lepton flavor violation
SO Physical Review D
JI Phys. Rev. D
PY 2022
BP 035021
EP 21pp
VL 105
IS 3
DI 10.1103/PhysRevD.105.035021
LA English
AB We present here two concrete examples of models where a sub-TeV scale breaking of their respective T-13 and A(5) flavor symmetries is able to account for the recently observed discrepancy in the muon anomalous magnetic moment, (g – 2)(mu). Similarities in the flavor structures of the charged-lepton Yukawa matrix and dipole matrix yielding (g – 2)(mu) give rise to strong constraints on low-scale flavor models when bounds from lepton flavor violation (LFV) are imposed. These constraints place stringent limits on the off- diagonal Yukawa structure, suggesting a mostly (quasi)diagonal texture for models with a low flavor breaking scale A(f). We argue that many of the popular flavor models in the literature designed to explain the fermion masses and mixings are not suitable for reproducing the observed discrepancy in (g – 2)(mu), which requires a delicate balance of maintaining a low flavor scale while simultaneously satisfying strong LFV constraints.
ER