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B0 meson decays to rho0 K*0, f0 K*0, and rho-K*+, including higher K* resonances

Abstract : We present branching fraction measurements for the decays B0 -> rho0 K*0, B0 -> f0 K*0, and B0 -> rho- K*+, where K* is an S-wave (K pi)_0* or a K*(892) meson; we also measure B0 -> f0 K_2*(1430)^0. For the K*(892) channels, we report measurements of longitudinal polarization fractions (for rho final states) and direct CP-violation asymmetries. These results are obtained from a sample of (471.0 +/- 2.8) x 10^6 BBbar pairs collected with the BaBar detector at the PEP-II asymmetric-energy e+ e- collider at the SLAC National Accelerator Laboratory. We observe rho0 K*(892)^0, rho0 (K pi)_0^{*0}, f0 K*(892)^0, and rho- K*(892)+ with greater than 5 sigma significance, including systematics. We report first evidence for f0 (K pi)_0^{*0} and f0 K_2*(1430)^0, and place an upper limit on rho- (K pi)_0^{*+}. Our results in the K*(892) channels are consistent with no direct CP-violation.
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http://hal.in2p3.fr/in2p3-00653585
Contributor : Claudine Bombar <>
Submitted on : Monday, December 19, 2011 - 5:24:52 PM
Last modification on : Tuesday, June 30, 2020 - 10:00:40 AM

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J. P. Lees, J. P. Lees, V. Poireau, V. Tisserand, D. Bernard, et al.. B0 meson decays to rho0 K*0, f0 K*0, and rho-K*+, including higher K* resonances. Physical Review D, American Physical Society, 2012, 85, pp.072005. ⟨10.1103/PhysRevD.85.072005⟩. ⟨in2p3-00653585⟩

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