We present a method of determining the CKM-angle α by performing simultaneous measurements of the mixing-induced CP asymmetries of the decays Bd → ππ and Bd → KK̄. The accuracy of our approach is limited by SU(3)-breaking effects originating from b̄ → d̄ss̄ QCD-penguin diagrams. Using plausible power-counting arguments we show that these uncertainties are expected to be of the same order as those a...

During the last four years several parameters relevant for the analysis of the CP-violating ratio ε/ε improved and/or changed significantly. In particular, the experimental value of ε/ε and the strange quark mass decreased, the uncertainty in the CKM factor has been reduced, and for a value of the hadronic matrix element of the dominant electroweak penguin operator Q8, some consensus has been r...

Motivated by the recent experimental data, we have revisited the B → πK, ππ decays in the framework of QCD factorization, with inclusion of the important strong penguin corrections of order αs induced by b → Dg∗g∗ (D = d or s and g∗ denotes an off-shell gluon) transitions. We find that these higher order strong penguin contributions can provide ∼ 30% enhancement to the penguin-dominated B → πK ...

I briefly review CP violation in the B system, concentrating on B → πK decays. I discuss how to deal with electroweak-penguin contributions to these decays using flavour SU(3). With these, I show that the entire unitarity triangle can be extracted from measurements of B → πK decays. Finally, I examine the signals for new physics in these decays and the possibilities for measuring them. talk giv...

Supersymmetric contributions to the branching ratios and CP asymmetries of B → Kπ decays are analyzed in the view of recent experimental measurements. We show that supersymmetry can still provide a natural solution to the apparent discrepancy between theses results and the standard model expectations. We emphasize that chargino contributions may enhance the electroweak penguin effects that can ...

We present the contributions of new CP phases in CP asymmetries of twobody neutral Bs decays coming from a left–right model with spontaneous CP violation. Large deviations from the Standard Model predictions can be accommodated in a natural way by this type of models. The new physics effects on the mixing, width difference and decays are analysed. In particular, we show how the measurement of t...

B physics results from the Belle experiment are reviewed. Precise measurements of Cabbibo-Kobayashi-Maskawa matrix elements are made. Several decay modes are observed which will enable us to measure the CP angles, φ i in channels other than B 0 → ψK 0 modes. New rare decay modes are observed in many channels. Particular attention is paid to the first observation of the electroweak penguin-media...

I briefly review CP violation in the B system, concentrating on B → πK decays. I discuss how to deal with electroweak-penguin contributions to these decays using flavour SU(3). With these, I show that the entire unitarity triangle can be extracted from measurements of B → πK decays. Finally, I examine the signals for new physics in these decays and the possibilities for measuring them. talk giv...