We present branching fraction and CP asymmetry measurements as well as angular studies of B→ϕϕK decays using 464×106 BB⎯⎯⎯ events collected by the BABAR experiment. The branching fractions are measured in the ϕϕ invariant mass range below the ηc resonance (mϕϕ<2.85  GeV). We find ℬ(B+→ϕϕK+)=(5.6±0.5±0.3)×10−6 and ℬ(B0→ϕϕK0)=(4.5±0.8±0.3)×10−6, where the first uncertainty is statistical and the second systematic. The measured direct CP asymmetries for the B± decays are ACP=−0.10±0.08±0.02 below the ηc threshold (mϕϕ<2.85  GeV) and ACP=0.09±0.10±0.02 in the ηc resonance region (mϕϕ in [2.94, 3.02] GeV). Angular distributions are consistent with JP=0− in the ηc resonance region and favor JP=0+ below the ηc resonance.

Lees, J.P., Poireau, V., Prencipe, E., Tisserand, V., Garra Tico, J., Grauges, E., et al. (2011). Measurements of branching fractions and CP asymmetries and studies of angular distributions for B -> phi phi K decays. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 84(1), 1-13 [10.1103/PhysRevD.84.012001].

Measurements of branching fractions and CP asymmetries and studies of angular distributions for B -> phi phi K decays

PATRIGNANI, CLAUDIA;
2011

Abstract

We present branching fraction and CP asymmetry measurements as well as angular studies of B→ϕϕK decays using 464×106 BB⎯⎯⎯ events collected by the BABAR experiment. The branching fractions are measured in the ϕϕ invariant mass range below the ηc resonance (mϕϕ<2.85  GeV). We find ℬ(B+→ϕϕK+)=(5.6±0.5±0.3)×10−6 and ℬ(B0→ϕϕK0)=(4.5±0.8±0.3)×10−6, where the first uncertainty is statistical and the second systematic. The measured direct CP asymmetries for the B± decays are ACP=−0.10±0.08±0.02 below the ηc threshold (mϕϕ<2.85  GeV) and ACP=0.09±0.10±0.02 in the ηc resonance region (mϕϕ in [2.94, 3.02] GeV). Angular distributions are consistent with JP=0− in the ηc resonance region and favor JP=0+ below the ηc resonance.
2011
Lees, J.P., Poireau, V., Prencipe, E., Tisserand, V., Garra Tico, J., Grauges, E., et al. (2011). Measurements of branching fractions and CP asymmetries and studies of angular distributions for B -> phi phi K decays. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 84(1), 1-13 [10.1103/PhysRevD.84.012001].
Lees, J. P.; Poireau, V.; Prencipe, E.; Tisserand, V.; Garra Tico, J.; Grauges, E.; Martinelli, M.; Milanes, D. A.; Palano, A.; Pappagallo, M.; Eigen,...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/543495
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