Guo-Hong Wu

UbiquitousCPviolation in a top-inspired left-right model

We explore CP violation in a Left-Right Model that reproduces the quark mass and CKM rotation angle hierarchies in a relatively natural way by fixing the bidoublet Higgs VEVs to be in the ratio m_b:m_t. Our model is quite general and allows for CP to be broken by both the Higgs VEVs and the Yukawa couplings. Despite this generality, CP violation may be parameterized in terms of two basic phases. A very interesting feature of the model is that the mixing angles in the right-handed sector are found to be equal to their left-handed counterparts to a very good approximation. Furthermore, the right-handed analogue of the usual CKM phase delta_L is found to satisfy the relation delta_R \approx delta_L. The parameter space of the model is explored by using an adaptive Monte Carlo algorithm and the allowed regions in parameter space are determined by enforcing experimental constraints from the K and B systems. This method of solution allows us to evaluate the left- and right-handed CKM matrices numerically for various combinations of the two fundamental CP-odd phases in the model. We find that all experimental constraints may be satisfied with right-handed W and Flavour Changing Neutral Higgs masses as low as about 2 TeV and 7 TeV, respectively.

Supersymmetric time reversal violation in semileptonic decays of charged mesons

Abstract We provide a general analysis of time reversal violation arising from misalignment between quark and squark mass eigenstates. In particular, we focus on the possibility of large enhancement effects due to the top quark mass. For semileptonic decays of the charged mesons, K + → π 0 μ + ν μ , D + → K 0 μ + ν μ , and B + → D 0 τ + ν τ , the transverse polarization of the lepton P l ⊥ is a T -odd observable that is of great experimental interest. It is noted that under favorable choice of parameters, P μ ⊥ in K μ 3 + decay can be detectable at the ongoing KEK experiment and it holds a promising prospect for discovery at the proposed BNL experiment. Furthermore, P τ ⊥ in B ± decay could well be within the reach of B factories, but P μ ⊥ in D ± decay is not large enough for detection at the proposed τ-charm factory.

Tviolation inK+→μ+νγdecay and supersymmetry

Measurement of the transverse muon polarization

Supersymmetric signatures at an e

P^{\bot}_{\mu}

\gamma

in the

collider

K^+ \rightarrow \mu^+\nu\gamma

Polarization measurements and T violation in exclusive semileptonic B decays

decay will be attempted for the first time at the ongoing KEK E246 experiment and also at a proposed BNL experiment. We provide a general analysis of how

T-Violation in

P^{\bot}_{\mu}

K^+ \to \mu^+ \nu \gamma

is sensitive to the physical

Decay And Supersymmetry

CP