Erratum: Z→bb̄ decay asymmetry and left-right models (Physical Review D (2002) 66 (013004))
Journal
Physical Review D
Journal Volume
57
Journal Issue
11
Date Issued
1998
Author(s)
Valencia G.
Abstract
The model with couplings of the new right-handed interactions to the third generation of fermions as defined in Eq. ͑5͒ is ruled out by Z-pole data for ϩ Ϫ .The relation between the -lepton couplings and the b-quark couplings to the new gauge bosons is dictated by anomaly cancellation and the requirement of minimal new fermion content ͑only one right-handed neutrino͒.To relax this relation and make the model viable it is necessary to introduce additional vector-like fermions.This can be done in several ways, for example: ͑a͒ Adding a charged lepton pair to the third generation, E R ϭ(1,1,1)(Ϫ2) and E L ϭ(1,1,1)(Ϫ2).The L L and E R behave like the SM third generation leptons, and the L R and E L can be made heavy through the large H R VEV. ͑b͒ Giving all the leptons SM quantum numbers and introducing new vector-like quarks to cancel the anomalies in a manner similar to that of a ''leptophobic'' ZЈ model.
Type
corrigendum