Observation of Tensor and Scalar Mesons Produced ine+e−Annihilation at 29 GeV

The production of the tensor mesons $f^0\mathrm{}\left(1270\right)\mathrm{}$ and $K^{*0\mathrm{}}\mathrm{}\left(1430\right)\mathrm{}$ and the scalar meson $S\left(975\right)\mathrm{}$ has been observed in $e^{+}{e}^{-}$ annihilation at 29 GeV center-of-mass energy by use of data obtained with the high-resolution spectrometer at the SLAC $e^{+}{e}^{-}$ storage ring PEP. The mean multiplicities for meson momenta greater than 1450 MeV/c are $〈n_{f^0}〉=0.11\mathrm{}\pm 0.04$, $〈n_{K^{*0\mathrm{}}\mathrm{}\left(1430\right)\mathrm{}}〉=0.10\mathrm{}\pm 0.06$, and $〈n_S〉=0.05\mathrm{}\pm 0.02$ per hadronic event. The fragmentation functions of the tensor mesons are in good agreement with the predictions of the Webber cluster model. The data are consistent with a predominant strange-quark content on the $S$ meson.