We report measurements of the decays B+→ϕϕK+ and B0→ϕϕK0 using a sample of 231×10^6 BB̅ pairs collected with the BABAR detector at the PEP-II asymmetric-energy B factory at the Stanford Linear Accelerator Center. The branching fractions are measured to be B(B+→ϕϕK+)=(7.5±1.0(stat)±0.7(syst))×10-6 and B(B0→ϕϕK0)=(4.1-1.4+1.7(stat)±0.4(syst))×10-6 for a ϕϕ invariant mass below 2.85 GeV/c2.
Observation of B+→φφK+ and Evidence for B0→φφK0 below ηc Threshold
SIMI, GABRIELE;GAZ A;MARGONI, MARTINO;SIMONETTO, FRANCO;STROILI, ROBERTO;VOCI, CESARE;
2006
Abstract
We report measurements of the decays B+→ϕϕK+ and B0→ϕϕK0 using a sample of 231×10^6 BB̅ pairs collected with the BABAR detector at the PEP-II asymmetric-energy B factory at the Stanford Linear Accelerator Center. The branching fractions are measured to be B(B+→ϕϕK+)=(7.5±1.0(stat)±0.7(syst))×10-6 and B(B0→ϕϕK0)=(4.1-1.4+1.7(stat)±0.4(syst))×10-6 for a ϕϕ invariant mass below 2.85 GeV/c2.File in questo prodotto:
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