Production of $φ$ and $F (1970) \to φ π$ in $e^{+} e^{-}$ Annihilation at 29 GeV

Data from the high-resolution spectrometer at PEP have been used to study the inclusive production of

φ

mesons and

F^{\pm}

mesons decaying into

φ π^{\pm}

. Fragmentation functions and cross sections are presented and compared to existing data. The total

φ

cross section at 29 GeV is 40±6 pb. The observed

F

signal in the region

z > 0.4

, given the assumption that

\frac{R (F)}{[R (F) + R (D)]} = 0.15

, corresponds to an

F \to φ π

branching ratio of (3.3±1.1)%. The measured

F

mass is 1963±3±3 MeV/

c^{2}

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Production of φ and F(1970)→φπ in e+e− Annihilation at 29 GeV