Searching for Anomalous Weak Couplings of Heavy Flavors at the SLC and LEP

Abstract

The existence of anomalous electric($\tilde{\kappa }$) and/or magnetic($\kappa$) dipole moment couplings between the heavy flavor fermions ($c,b,\tau$) and the $Z$ boson can cause significant shifts in the values of several electroweak observables currently being probed at both the SLC and LEP. Using the good agreement between existing data and the predictions of the Standard Model we obtain strict bounds on the possible strength of these new interactions for all of the heavy flavors. The decay $Z\to b\bar{b}$, however, provides some possible hint of new physics. The corresponding anomalous couplings of $\tau$'s to photons is briefly examined.

21 pages, 14 figs(available on request), LaTex, SLAC-PUB-6672

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Cited by in corpus (10)

• Weak magnetic dipole moments in two-Higgs-doublet models
• W ANOMALOUS MOMENTS AND THE POLARIZATION ASYMMETRY ZERO IN gamma e --> W nu
• Effective lagrangian description of top production and decay
• Searching For Anomalous $\tau \nu W$ Couplings
• Upper Limits on Electric and Weak Dipole Moments of Tau-Lepton and Heavy Quarks from e+e- Annihilation
• Following the trail of new physics via VBF Higgs signal at the Large Hadron Collider
• Weak Magnetic Dipole Moments in the MSSM
• Top Quark Amplitudes with an Anomalous Magnetic Moment
• Probing Magnetic Moment Operators in $H\gamma$ Production and $H\to {\tau }^{+}{\tau }^{-}\gamma$ Rare Decay
• Can We Observe Weak Anomalous Couplings of Heavy Quarks Through Three Jet Events?