Zweig-rule-satisfying inelastic rescattering in B decays to pseudoscalar mesons

Original · EN

We discuss all contributions from Zweig-rule-satisfying SU(3)-symmetric inelastic FSI-induced corrections in B decays to ππ, πK, KK, πη(η'), and K η(η'). It is shown how all of these FSI corrections lead to a simple redefinition of the amplitudes, permitting the use of a simple diagram-based description, in which, however, weak phases may enter in a modified way. The inclusion of FSI corrections admitted by the present data allows an arbitrary relative phase between the penguin and tree short-distance amplitudes. The FSI-induced error of the method, in which the value of the weak phase γ is to be determined by combining future results from B+,B⁰d,B⁰ₛ decays to Kπ, is estimated to be of the order of 5ᵒ for γ≈ 50ᵒ-60ᵒ.