We discuss the role of electroweak penguins in B decays to two light pseudoscalar mesons. We confirm that the extraction of the weak phase α through the isospin analysis involving B → ππ decays is largely unaffected by such operators. However, the methods proposed to obtain weak and strong phases by relating B → ππ, B → πK and B → KK decays through flavor SU(3) will be invalidated if electrowea...

We complete the computation of the 1-loop (αs) corrections to hard spectator scattering in non-leptonic B decays at leading power in Λ/mb by evaluating the penguin amplitudes. This extends the knowledge of these next-to-next-to-leadingorder contributions in the QCD factorization formula for B decays to a much wider class of final states, including all pseudoscalar-pseudoscalar, pseudoscalar-vec...

In the past decade, electroweak penguin decays have provided a number of precision measurements, turning into one most competitive ways to search for New Physics that describe beyond Standard Model phenomena. An overview measurements made at $B$ factories and hadron colliders are given experimental methods presented. Experimental required provide further insight present indications discussed.

Isospin structure of gluon mediated or strong penguin is significantly altered when the full electroweak corrections are included. This has the consequence that some previous analyses which relied on a simple isospin structure in charmless B decays become inapplicable. We present the general Hamiltonian in next-to-leading order QCD, and illustrate our conclusion quantitatively for B → ππ and B ...

Recently, we have seen interesting progress in the exploration of CP violation in B0 d → π+π−: the measurements of mixing-induced CP violation by the BaBar and Belle collaborations are now in good agreement with each other, whereas the picture of direct CP violation is still unclear. Using the branching ratio and direct CP asymmetry of B0 d → π−K+, this situation can be clarified. We predict Ad...

Using the SU(3) flavour symmetry of strong interactions, we propose strategies for extracting both the CKM-angle γ and the b̄ → ūus̄ tree-level amplitude T ′. We present also an approximate approach using the branching ratios for the modes B → πK, B d → π−K+, B̄ d → π+K− and B → ππ which should be rather promising from the experimental point of view. The quantities γ and T ′ determined this way ma...

A general parametrization of the B+ → π+K0 and B0 d → π−K+ decay amplitudes is presented. It relies only on the isospin symmetry of strong interactions and the phase structure of the Standard Model and involves no approximations. In particular, this parametrization takes into account both rescattering and electroweak penguin effects, which limit the theoretical accuracy of bounds on γ arising f...