# Measurement of the average $\phi$ multiplicity in $B$ meson decay

Abstract : 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.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-00021676
Contributor : Claudine Bombar <>
Submitted on : Monday, April 19, 2004 - 5:18:16 PM
Last modification on : Thursday, April 4, 2019 - 1:20:17 AM

### Citation

B. Aubert, R. Barate, D. Boutigny, J.M. Gaillard, A. Hicheur, et al.. Measurement of the average $\phi$ multiplicity in $B$ meson decay. Physical Review D, American Physical Society, 2004, 69, pp.052005. ⟨in2p3-00021676⟩

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