No abstract

We show that the quark mixing matrix can be parametrized in exactly unitary forms with the imaginary parts present only at the order of 10. With s"=si and s"well determined, measurements of~' or other CP-nonconservation effects can determine s, s~. Then after I v"q I = s, is measured, s& is known. We also give a simple expression for the CP asymmetry in the B-B mixing.

We consider various integrated lepton charge-energy asymmetries and azimuthal asymmetries as tests of CP violation in the process e − e + → W − W + . These asymmetries are sensitive to different linear combinations of the CP violating form factors in the three gauge boson W − W + production vertex, and can distinguish dispersive and absorptive parts of the form factors. It makes use of purely hadronic and purely leptonic modes of W 's decays as well as the mixed modes. The techniques of using the kinematics of jets or missing momentum to construct CP-odd observables are also employed. These CP violating observables are illustrated in the generalized Left-Right Model and the Charged Higgs Model.

Phenomenology of the notion of an unparticle U, recently perceived by Georgi, to describe a scale invariant sector with a non-trivial infrared fixed point at a higher energy scale is explored in details. Behaving like a collection of dU (the scale dimension of the unparticle operator OU ) invisible massless particles, this unparticle can be unveiled by measurements of various energy distributions for the processes Z → ff U and e − e + → γU at e − e + colliders, as well as monojet production at hadron colliders. We also study the propagator effects of the unparticle through the Drell-Yan tree level process and the one-loop muon anomaly.