Measurement of the Average $φ$ Multiplicity in $B$ Meson Decay

Details Measurement of the Average $φ$ Multiplicity in $B$ Meson Decay Measurement of the Average $φ$ Multiplicity in $B$ Meson Decay

2003-11-04

arxiv.org/abs/hep-ex/0311008v1

Phys.Rev.D69:052005,2004

Physics

High Energy Physics

High Energy Physics - Experiment

9 pages, 4 figures, submitted to Phys. Rev. D

Scientific paper

10.1103/PhysRevD.69.052005

We present a measurement of the average multiplicity of $\phi$ mesons in $B^0$, $\kern 0.18em\bar{\kern -0.18em B}{}^0$ and $B^\pm$ meson decays. Using $17.6 fb^{-1}$ of data taken at the $\Upsilon{(4S)}\xspace$ resonance by the {\slshape B\kern-0.1em{\smaller A}\kern-0.1em B\kern-0.1em{\smaller A\kern-0.2em R}} detector at the PEP-II $e^+e^-\xspace$ storage ring at the Stanford Linear Accelerator Center, we reconstruct $\phi$ mesons in the $K^+K^-$ decay mode and measure ${\cal{B}}(B\to \phi X) = (3.41\pm0.06\pm0.12)%$. This is significantly more precise than any previous measurement.

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