Measurement of CP violation in the phase space of B^± → K⁺K^-π^± and B^± → π⁺π^-π^± decays

The charmless decays B^± → K⁺K^-π^± and B^± → π⁺π^-π^± are reconstructed in a data set of pp collisions with an integrated luminosity of 1.0 fb^-1 and center-of-mass energy of 7 TeV, collected by LHCb in 2011. the inclusive charge asymmetries of these modes are measured to be A_CP(B^±→K⁺K^-π^±)=-0.141±0.040(stat)±0.018(syst)±0.007(J=ΠK^±) and ACP(B^± → π⁺π^-π^±) = 0.117 ± 0.021 (stat)±0.009 (syst) ± 0.007(J=Π K^±), where the theird uncertainty is due to the CP asymmetry of the B^± → J=ΠK^± reference mode. In addition to the inclusive CP asymmetries, larger asymmetries are observed in localized regions of phase space.