Constraints on Gauged B-3L_tau and Related Theories

2000/10/31 by Lay Nam Chang, Oleg Lebedev, Will Loinaz +1
Physics and Astronomy · #hep-ph

paper · pdf · doi:10.1103/physrevd.63.074013

published as Phys.Rev. D63 (2001) 074013 · 15 pages REVTEX, 4 postscript figures, uses axodraw.sty

arxiv created 2000/11/29 · arxiv updated 2009/11/30

Abstract

We consider extensions of the Standard Model with an extra U(1) gauge boson which couples to B-(alpha L_e + beta L_mu + gamma L_tau) with alpha + beta + gamma = 3. We show that the extra gauge boson necessarily mixes with the Z leading to potentially significant corrections to the Z-f-fbar vertex. The constraints on the size of this correction imposed by the Z-pole data from LEP and SLD are derived.

Related

• Probing Anomalous Gauge Boson Couplings at LEP
• Z' Constraints from e+e- to f fbar at NLC
• Exclusion bounds for neutral gauge bosons
• Distinguishing Between Models with Extra Gauge Bosons at the ILC
• M_W helps select Z^′ models for b → s ℓ ℓ anomalies