We present measurements of the branching fractions, longitudinal polarization, and direct CP-violation asymmetries for the decays B+→ρ0K*+ and B+→f0(980)K*+ with a sample of (467±5)×106BB⎯⎯⎯ pairs collected with the BABAR detector at the PEP-II asymmetric-energy e+e− collider at the SLAC National Accelerator Laboratory. We observe B+→ρ0K*+ with a significance of 5.3σ and measure the branching fraction ℬ(B+→ρ0K*+)=(4.6±1.0±0.4)×10−6, the longitudinal polarization fL=0.78±0.12±0.03, and the CP-violation asymmetry CP=0.31±0.13±0.03. We observe B+→f0(980)K*+ and measure the branching fraction ℬ(B+→f0(980)K*+)×ℬ(f0(980)→π+π−)=(4.2±0.6±0.3)×10−6 and the CP-violation asymmetry CP=−0.15±0.12±0.03. The first uncertainty quoted is statistical and the second is systematic.

Sanchez, P.d.A., Lees, J.P., Poireau, V., Prencipe, E., Tisserand, V., Garra Tico, J., et al. (2011). Measurements of branching fractions, polarizations, and direct CP-violation asymmetries in B(+) -> rho(0)K*(+) and B(+) -> f(0)(980)K*(+) decays. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 83(5), 1-8 [10.1103/PhysRevD.83.051101].

Measurements of branching fractions, polarizations, and direct CP-violation asymmetries in B(+) -> rho(0)K*(+) and B(+) -> f(0)(980)K*(+) decays

PATRIGNANI, CLAUDIA;
2011

Abstract

We present measurements of the branching fractions, longitudinal polarization, and direct CP-violation asymmetries for the decays B+→ρ0K*+ and B+→f0(980)K*+ with a sample of (467±5)×106BB⎯⎯⎯ pairs collected with the BABAR detector at the PEP-II asymmetric-energy e+e− collider at the SLAC National Accelerator Laboratory. We observe B+→ρ0K*+ with a significance of 5.3σ and measure the branching fraction ℬ(B+→ρ0K*+)=(4.6±1.0±0.4)×10−6, the longitudinal polarization fL=0.78±0.12±0.03, and the CP-violation asymmetry CP=0.31±0.13±0.03. We observe B+→f0(980)K*+ and measure the branching fraction ℬ(B+→f0(980)K*+)×ℬ(f0(980)→π+π−)=(4.2±0.6±0.3)×10−6 and the CP-violation asymmetry CP=−0.15±0.12±0.03. The first uncertainty quoted is statistical and the second is systematic.
2011
Sanchez, P.d.A., Lees, J.P., Poireau, V., Prencipe, E., Tisserand, V., Garra Tico, J., et al. (2011). Measurements of branching fractions, polarizations, and direct CP-violation asymmetries in B(+) -> rho(0)K*(+) and B(+) -> f(0)(980)K*(+) decays. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 83(5), 1-8 [10.1103/PhysRevD.83.051101].
Sanchez, P. del Amo; Lees, J. P.; Poireau, V.; Prencipe, E.; Tisserand, V.; Garra Tico, J.; Grauges, E.; Martinelli, M.; Milanes, D. A.; Palano, A.; P...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/543516
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