The observed strong phase difference of 30^{o} between I=(3/2) and I=(1/2) final states for the decay B to D Pi is analyzed in terms of rescattering like D^{∗}Pi to D Pi, etc. It is concluded that for the decay B^{o}to D^{+} Pi^{-} the strong phase is only about 10^{o}. Implications for the determination of sin(2 Beta + gamma) are discussed.
@article{arxiv.hep-ph/0309166,
title = {Strong Phases in the Decays B to D Pi},
author = {Lincoln Wolfenstein Ph. D},
journal= {arXiv preprint arXiv:hep-ph/0309166},
year = {2007}
}