F. Kruger et al., Angular distribution and CP asymmetries in the decays (B)over-bar -> K-pi(+)e(-)e(+) and (B)over-bar ->pi(-)pi(+)e(-)e(+) - art. no. 114028, PHYS REV D, 6111(11), 2000, pp. 4028
The short-distance Hamiltonian describing b-->s(d)e(-) e(+) in the standard
model is used to obtain the decay spectrum of (B) over bar-->K- pi(+) e(-)
e(+) and (B) over bar-->pi(-) pi(+) e(-) e(+), assuming the K pi and pi pi
systems to be the decay products of K* and rho respectively. The specific
features calculated are (i) the angular distribution of K- (or pi(-)) in th
e K- pi(+) (or pi(-) pi(+) ) center-of-mass (c.m.) frame, (ii) the angular
distribution of e(-) in the e(-) e(+) c.m. frame, and (iii) the correlation
between the meson and lepton planes. We also derive CP-violating observabl
es obtained by combining the above decays with the conjugate processes B-->
K+ pi(-) e(-) e(+) and B -->pi(-) pi(+) e(-) e(+).