Forward-backward $b$-quark asymmetry at the Z pole: QCD uncertainties redux

David d'Enterria, Cynthia Yan

The forward-backward asymmetry of $b$-quarks measured at LEP in $e^{+}{e}^{-}$ collisions at the Z pole, $A_{FB}^{0,b}{|}^{\exp }=0.0992\pm 0.0016$, remains today the electroweak precis…