Ajaltouni, Z.Leitner, O.Perret, P.Rimbault, C.Thomas, A.2006-07-052006-07-052003European Physical Journal C: Particles and Fields, 2003; 29(2):215-2331434-60441434-6052http://hdl.handle.net/2440/10976We present a detailed study of direct CP violation and the branching ratios in the channels B<sup>0,±</sup> → π<sup>+</sup>π<sup>-</sup>V<sup>0,±</sup>, where V is a vector meson (K*<sup>0,±</sup> or ρ<sup>plusmn;</sup>). Emphasis is put upon the important role played by ρ<sup>0</sup>-ω mixing effects in the estimation of the CP-violating asymmetry parameter, a<inf>CP</inf>, associated with the difference of the B and B̄ decay amplitudes. A thorough study of the helicity amplitudes is presented as a function of the pion-pion invariant mass. All of the calculations and simulations considered correspond to channels which will be analyzed at the LHCb facility.enDirect CP violation in B → π+π−V with ρ⁰–ω mixing effects: phenomenological approachDirect CP violation in B -> pi+pi -V with rho(0)-omega mixing effects: phenomenological approachJournal article002003007110.1140/epjc/s2003-01219-00001846394000072-s2.0-004291476359105Thomas, A. [0000-0003-0026-499X]