Dynamical left-right symmetry breaking

摘要

We study a left right symmetric model which contains only elementary gauge boson and fermion fields and no scalars. The phenomenology required symmetry breaking emerges dynamically leading to a composite Higgs sector with a renormalizable effective Lagrangian. We discuss the pattern of symmetry breaking and phenomenological consequences of this scenario. It is shown that a viable top quark mass can be achieved for the ratio of the VEVs of the bi-doublet tan (beta) (identical to) k/k' (approx equal) 1.3 - 4. For a theoretically plausible choice of the parameters the right-handed scale can be as low as (approx) 20 TeV; in the case one expects several intermediate and low-scale scalars in addition to the Standard Model Higgs boson. These may lead to observable lepton flavour violation effects including (mu) (yields) e(gamma) decay with the rate close to its present experimental upper bound. (author). 46 refs, 9 figs. (Atomindex citation 27:020600)