With a sample of about 227×10^6 BB̅ pairs recorded with the BABAR detector we perform a full angular analysis of the decay B0→ϕK*0(892). We make novel measurements of five parameters sensitive to CP violation. We also measure the branching fraction to be (9.2±0.9±0.5)×10-6 and determine the fractions of longitudinal and parity-odd transverse contributions as fL=0.52±0.05±0.02 and f⊥=0.22±0.05±0.02. The phases of the parity-even and parity-odd transverse amplitudes relative to the longitudinal amplitude are found to be ϕ∥=2.34-0.20+0.23±0.05 rad and ϕ⊥=2.47±0.25±0.05 rad. We also observe the decay B0→ϕK*0(1430).
Measurement of the B-0 -> phi K-*0 decay amplitudes
MARGONI, MARTINO;SIMONETTO, FRANCO;STROILI, ROBERTO;VOCI, CESARE;SIMI, GABRIELE;
2004
Abstract
With a sample of about 227×10^6 BB̅ pairs recorded with the BABAR detector we perform a full angular analysis of the decay B0→ϕK*0(892). We make novel measurements of five parameters sensitive to CP violation. We also measure the branching fraction to be (9.2±0.9±0.5)×10-6 and determine the fractions of longitudinal and parity-odd transverse contributions as fL=0.52±0.05±0.02 and f⊥=0.22±0.05±0.02. The phases of the parity-even and parity-odd transverse amplitudes relative to the longitudinal amplitude are found to be ϕ∥=2.34-0.20+0.23±0.05 rad and ϕ⊥=2.47±0.25±0.05 rad. We also observe the decay B0→ϕK*0(1430).File in questo prodotto:
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