Penguin corrections and strong phases in a time-dependent analysis of (B-0)over-bar(B-0)r ->pi(+)pi(-)

摘要

From a time-dependent analysis of the decay B-d(0)(-)-->pi(+)pi(-) and using a model-dependent A(P)/A(T) ratio of the penguin-to-tree amplitudes contributing to the decay, both the weak phase alpha and the strong phase shift difference delta can be extracted from the data. The value of the weak phase beta, expected to be measured from the decay B-d(0)-->J/psi K-s(0), is used to parametrize the value of A(P)/A(T) and the corresponding penguin correction to the observed asymmetry in B-d(0)-->pi(+)pi(-). [References: 40]