A confining SU(2)sub(L) x SU(2)sub(R) gauge model of the weak interactions

With the aim of understanding weak interactions as residual hypercolor interactions among composite quarks and leptons, we investigate a confining SU(2)sub(L) x SU(2)sub(R) hypercolor gauge theory with only fundamental fermions (i.e. without fundamental scalars). A scenario with two different confinement scales, #betta#sub(L) proportional Gsub(F)sup(-1/2) proportional 300 GeV and #betta#sub(R) > #betta#sub(L), is systematically analyzed as function of the parameter zeta = #betta#sub(R)/#betta#sub(L). The general requirement of anomaly saturation is combined with effective Lagrangian techniques - a powerful procedure also of interest for more general confining product groups. Two solutions, separated by a phase boundary, emerge. Phase I for 1 <= zeta zetasub(crit): only left-handed massless composite quarks and leptons (of the Abbott-Farhi type). Phase II results from separate anomaly saturation at the two scales #betta#sub(R) and #betta#sub(L), Phase I from joint anomaly saturation (matching). Dynamical insight comes from treating confinement in two steps, at #betta#sub(R) and #betta#sub(L) consecutively, which amounts to a complementary version of the technicolor mechanism; it necessarily entails the appearance of Goldstone bosons in the intermediate momentum range, #betta#sub(L) < p < #betta#sub(R), which play the role of dynamical scalars being subject to SU(2)sub(L) confinement. (orig.)