PT Journal
AU Calibbi, L
   Lopez-Ibañez, ML
   Melis, A
   Vives, O
TI Muon and electron g – 2 and lepton masses in flavor models
SO Journal of High Energy Physics
JI J. High Energy Phys.
PY 2020
BP 087
EP 23pp
VL 06
IS 6
DI 10.1007/JHEP06(2020)087
LA English
DE Precision QED; Beyond Standard Model; Effective Field Theories; Quark Masses and SM Parameters
AB The stringent experimental bound on μ-> e gamma is compatible with a simultaneous and sizable new physics contribution to the electron and muon anomalous magnetic moments (g – 2)(l) (l = e, mu), only if we assume a non-trivial flavor structure of the dipole operator coefficients. We propose a mechanism in which the realization of the (g – 2)(l) correction is manifestly related to the mass generation through a flavor symmetry. A radiative flavon correction to the fermion mass gives a contribution to the anomalous magnetic moment. In this framework, we introduce a chiral enhancement from a non-trivial O(1) quartic coupling of the scalar potential. We show that the muon and electron anomalies can be simultaneously explained in a vast region of the parameter space with predicted vector-like mediators of masses as large as M chi is an element of [0.6, 2.5] TeV.
ER