Abstract
An amplitude analysis of B0 → (π+π−)(K+π−) decays is performed in the two-body invariant mass regions 300 < m(π+π−) < 1100 MeV/c2, accounting for the ρ0, ω, f0(500), f0(980) and f0(1370) resonances, and 750 < m(K+π−) < 1200 MeV/c2, which is dominated by the K*(892)0 meson. The analysis uses 3 fb−1 of proton-proton collision data collected by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. The CP averages and asymmetries are measured for the magnitudes and phase differences of the con- tributing amplitudes. The CP-averaged longitudinal polarisation fractions of the vector-vector modes are found to be {tilde{f}}_{rho {K}^{*}}^0 = 0.164 ± 0.015 ± 0.022 and {tilde{f}}_{omega {K}^{*}}^0 = 0.68 ± 0.17 ± 0.16, and their CP asymmetries, {mathcal{A}}_{rho {K}^{*}}^0 = −0.62 ± 0.09 ± 0.09 and {mathcal{A}}_{omega {K}^{*}}^0 = −0.13 ± 0.27 ± 0.13, where the first uncertainty is statistical and the second systematic.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.