We present branching fraction measurements for the decays B0→ρ0K *0, B0→f 0K *0, and B0→ρ -K *+, where K * is an S-wave (Kπ)0* or a K *(892) meson; we also measure B0→f 0K2*(1430)0. For the K *(892) channels, we report measurements of longitudinal polarization fractions (for ρ final states) and direct CP violation asymmetries. These results are obtained from a sample of (471.0±2.8) ×106 BB̄ pairs collected with the BABAR detector at the PEP-II asymmetric-energy e +e - collider at the SLAC National Accelerator Laboratory. We observe ρ0K *(892)0, ρ0(Kπ)0*0, f 0K *(892)0, and ρ -K *(892) + with greater than 5σ significance, including systematics. We report first evidence for f 0(Kπ)0*0 and f 0K2*(1430)0, and place an upper limit on ρ -(Kπ)0*+. Our results in the K *(892) channels are consistent with no direct CP violation.

Lees, J., Poireau, V., Tisserand, V., Garra Tico, J., Grauges, E., Martinelli, M., et al. (2012). B0 meson decays to ρ0K *0, f 0K *0, and ρ -K *+, including higher K * resonances. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 85(7) [10.1103/PhysRevD.85.072005].

B0 meson decays to ρ0K *0, f 0K *0, and ρ -K *+, including higher K * resonances

CARPINELLI, Massimo
Membro del Collaboration Group
;
2012

Abstract

We present branching fraction measurements for the decays B0→ρ0K *0, B0→f 0K *0, and B0→ρ -K *+, where K * is an S-wave (Kπ)0* or a K *(892) meson; we also measure B0→f 0K2*(1430)0. For the K *(892) channels, we report measurements of longitudinal polarization fractions (for ρ final states) and direct CP violation asymmetries. These results are obtained from a sample of (471.0±2.8) ×106 BB̄ pairs collected with the BABAR detector at the PEP-II asymmetric-energy e +e - collider at the SLAC National Accelerator Laboratory. We observe ρ0K *(892)0, ρ0(Kπ)0*0, f 0K *(892)0, and ρ -K *(892) + with greater than 5σ significance, including systematics. We report first evidence for f 0(Kπ)0*0 and f 0K2*(1430)0, and place an upper limit on ρ -(Kπ)0*+. Our results in the K *(892) channels are consistent with no direct CP violation.
Articolo in rivista - Articolo scientifico
Scientifica
Babar detector
English
Carpinelli Massimo (BABAR Collaboration)
Lees, J., Poireau, V., Tisserand, V., Garra Tico, J., Grauges, E., Martinelli, M., et al. (2012). B0 meson decays to ρ0K *0, f 0K *0, and ρ -K *+, including higher K * resonances. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 85(7) [10.1103/PhysRevD.85.072005].
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10281/389261
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