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

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

1994-09-30

arxiv.org/abs/hep-ph/9409460v1

Phys.Rev. D51 (1995) 3811-3819

Physics

High Energy Physics

High Energy Physics - Phenomenology

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

Scientific paper

10.1103/PhysRevD.51.3811

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 $Z\rightarrow b\bar b$, however, provides some possible hint of new physics. The corresponding anomalous couplings of $\tau$'s to photons is briefly examined.

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