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VOLUME 66 (1997) | ISSUE 5 |
PAGE 299
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![Z\rightarrow b\bar b](/img/latex/1f/1f51d3c659bf859b751d687f07d84d22-v2.png) probability and asymmetry in a model of dynamical electroweak symmetry breaking
Arbuzov B.A., Osipov M.Yu.
The deviations from the Standard Model in the probability of Ζ —» øÿ decay and in the forward-backward asymmetry in the reaction e+ e~ —* øâ are studied in the framework of th« model of dynamical electroweak symmetry breaking, the basic point of which is the existence of a triple anomalous W-boson vertex in a region of momenta restricted by a cutoff Λ. We obtain a set of equations for additional terms in the Wbl vertex and apply its solution to the process Ζ —► øå. We show that it is possible to obtain a consistent description both deviations, which is quite nontrivial because these effects are not simply correlated. The necessary value of the anomalous W interaction coupling, λ — 0.22 ± 0.01, is consistent with existing limitations and leads to definite predictions, e.g., for pair W production in e+e~ collisions at LEP200. PACS: 12.15.-y, 14.80.Er
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