1998/10/01 by B. A. Arbuzov, Arbuzov, B. A.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/9810210
9 pages, Latex. Talk given at Q98 International Seminar, May 1998, Suzdal, Russia
arxiv created 1998/10/01 · arxiv updated 2009/11/30
The problem of possible deviations from the Standard Model is considered in the framework of a variant of dynamical electroweak symmetry breaking. The parameters of the theory are obtained, which describe deviations from SM in Z→ b b decay, are also consistent with leptonic left-right asymertry (SLAC data) and with the existence of a nontrivial solution for vertex t (Z,γ) c. The occurrence of this solution leads to a significant enhancement in neutral flavor changing transition t→ c. The intensity of this transition is connected with the c-quark mass, that leads to estimates of probabilities of exotic decays t→ c (Z,γ) (few %) and of the cross-section of a single t-quark production in process e+e-→ t c at LEP2 (≃ 0.03 pb at √(s) = 190 GeV). The model is shown to be consistent with the totality of the existing data; the predictions allow its unambiguous check.