ar X iv : h ep - p h / 02 05 06 4 v 1 7 M ay 2 00 2 Electroweak Limits on Non - Universal Z ’ Bosons

ar X iv : h ep - p h / 02 05 06 4 v 2 2 2 M ay 2 00 2 Electroweak Limits on Non - Universal Z ’ Bosons

Many types of physics beyond the standard model include an extended electroweak gauge group. If these extensions are associated with flavor symmetry breaking, the gauge interactions will not be flavor-universal. In this note we update the bounds placed by electroweak data on the existence of flavor non-universal extensions to the standard model in the context of topcolor assisted technicolor (T...

ar X iv : h ep - p h / 06 05 13 6 v 1 1 1 M ay 2 00 6 Lepton Flavor Violating τ and μ decays

ar X iv : h ep - p h / 02 05 07 9 v 1 8 M ay 2 00 2 CONSTRUCTING CONFINEMENT

The interaction between static quarks is derived by applying many-body techniques to QCD in Coulomb gauge. The result is shown to be exact in the IR and UV limits, and agrees remarkably well with lattice computations.

ar X iv : h ep - p h / 96 06 23 3 v 1 4 J un 1 99 6 Precision Electroweak Constraints on Top - Color Assisted

Using precision electroweak data, we put limits on " natural " top-color assisted technicolor models. Generically the new U (1) gauge bosons in these models must have masses larger than roughly 2 TeV, although in certain (seemingly unrealistic) models the bound can be much lower.

ar X iv : h ep - p h / 02 11 06 5 v 1 5 N ov 2 00 2 Recent Developments in Precision Electroweak Physics ∗

Developments in precision electroweak physics in the two years since the symposium are briefly summarized.