Analysis of the three-body B -> D+D-pi(0) decay - art. no. 033002

The decay process B --> D+ D- pi(0) is an interesting channel for the inves tigation of CP violating effects in the b sector. We write down a decay amp litude constrained by a low-energy theorem, which also includes the contrib ution of resonant S- and P-wave b-flavored and charmed mesons, and we deter mine the relevant matrix elements in the infinite heavy quark mass limit, a ssuming the factorization ansatz and a suitable heavy meson effective chira l Lagrangian. We estimate the rate of the decay: B(B --> D+ D- pi(0)) simil ar or equal to 1 X 10(-3). We also analyze the time-independent and time-de pendent differential decay distributions, concluding that a signal for this process should be observed at the B factories. Finally, we give an estimat e of the decay rate of the Cabibbo-favored process B --> D+ D- K-S for whic h we find a branching ratio similar or equal to 9 X 10(-3). [S0556-2821(99) 05811-7].