The time-integrated untagged Dalitz plot of the three-body hadronic charmless decay B[over ¯]^0→K_S^0π^+π^- is studied using a pp collision data sample recorded with the LHCb detector, corresponding to an integrated luminosity of 3.0 fb^-1. The decay amplitude is described with an isobar model. Relative contributions of the isobar amplitudes to the B[over ¯]^0→K_S^0π^+π^- decay branching fraction and CP asymmetries of the flavor-specific amplitudes are measured. The CP asymmetry between the conjugate B[over ¯]^0→K^*(892)^-π^+ and B^0→K^*(892)^+π^- decay rates is determined to be -0.308±0.062.
Amplitude Analysis of the Decay B[over ¯]^0→K_S^0π^+π^- and First Observation of the CP Asymmetry in B[over ¯]^0→K^*(892)^-π^+
Veltri, M;
2018
Abstract
The time-integrated untagged Dalitz plot of the three-body hadronic charmless decay B[over ¯]^0→K_S^0π^+π^- is studied using a pp collision data sample recorded with the LHCb detector, corresponding to an integrated luminosity of 3.0 fb^-1. The decay amplitude is described with an isobar model. Relative contributions of the isobar amplitudes to the B[over ¯]^0→K_S^0π^+π^- decay branching fraction and CP asymmetries of the flavor-specific amplitudes are measured. The CP asymmetry between the conjugate B[over ¯]^0→K^*(892)^-π^+ and B^0→K^*(892)^+π^- decay rates is determined to be -0.308±0.062.File in questo prodotto:
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