Isospin Structure of Penguins And Their Consequences in B Physics

الأصل · EN

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→ Kπ decays in the factorization approximation. Some remarks on CP asymmetries in B decays are also made.