Electroweak Precision Data and a Heavy Z'

Abstract

We consider the physics of an extra $U(1)$ gauge boson $Z^{\prime }$, which can mix with $Z$ through intermediate fermion loops. The loop contribution due to the heavy top quark significantly affects the low-energy observables, and for $m_{Z^{\prime }}>m_Z$, one can always adjust the shifts in these observables to be in the right direction suggested by experiments, when we impose the anomaly cancellation conditions for $Z^{\prime }$.

LaTeX file, includes postscript of two figures. Title changed in published version. Replaces previous version.

References in corpus (5)

• Observation of Top Quark Production in Pbar-P Collisions
• Observation of the Top Quark
• Implications of High Precision Experiments and the CDF Top Quark Candidates
• Hints of New Flavor Physics at LEP?
• Reconciling the LEP and Slac Measurements of Sin^2(Θ_W)

Cited by in corpus (2)

• Semileptonic Transition of $Σ_b \rar Σμ^+ μ^-$ in Family Non-universal $Z^{\prime }$ Model
• Effects of neutral $Z^{\prime }$ boson in $B_s\to \varphi {\ell }^{+}{\ell }^{-}$ decay with polarized $\varphi$ and the unpolarized and polarized $CP$ violation asymmetry