PT Journal
AU Boucenna, SM
   Celis, A
   Fuentes-Martin, J
   Vicente, A
   Virto, J
TI Non-abelian gauge extensions for B-decay anomalies
SO Physics Letters B
JI Phys. Lett. B
PY 2016
BP 214
EP 219
VL 760
DI 10.1016/j.physletb.2016.06.067
LA English
AB We study the generic features of minimal gauge extensions of the Standard Model in view of recent hints of lepton-flavor non-universality in semi-leptonic b -> sl(+)l(-) and b -> cl nu decays. We classify the possible models according to the symmetry-breaking pattern and the source of flavor non-universality. We find that in viable models the SU(2)(L) factor is embedded non-trivially in the extended gauge group, and that gauge couplings should be universal, hinting to the presence of new degrees of freedom sourcing non-universality. Finally, we provide an explicit model that can explain the B-decay anomalies in a coherent way and confront it with the relevant phenomenological constraints.
ER