Angular Distribution and CP Asymmetries in the Decays B->K^-pi^+e^-e^+ and B->pi^-pi^+e^-e^+

The short-distance Hamiltonian describing b → s ( d ) e − e + in the standard model is used to obtain the decay spectrum of ¯ B → K − π + e − e + and ¯ B → π − π + e − e + , assuming the Kπ and ππ systems to be the decay products of K ∗ and ρ respectively. Specific features calculated are (i) angular distribution of K − (or π − ) in the K − π + (or π − π + ) centre-of-mass (c.m.) frame; (ii) 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 observables obtained by combining the above decays with the conjugate processes B → K + π − e − e + and B → π − π + e − e + .