1986•Physical Review LettersOpen access
Observation of Tensor and Scalar Mesons Produced in e+e− Annihilation at 29 GeV
S. Abachi, P. Baringer, Ben Bylsma, R. DeBonte, D. Koltick, F.J. Loeffler, E. H. Low, R. L. McIlwain, D. H. Miller, C. R. Ng, L. K. Rangan, E. I. Shibata, M. Derrick, K. K. Gan, P. Kooijman, J. S. Loos, B. Musgrave, L. E. Price, J. Repond, K. Sugano, J. M. Weiss, D. Wood, D. Blockus, B. Brabson, J.-M. Brom, C. K. Jung, H. Ogren, D. R. Rust, C. Akerlof, J. Chapman, D. Errede, P. Kesten, D. I. Meyer, D. Nitz, A. A. Seidl, R. P. Thun, M. Willutzky, B. Cork
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Abstract
The production of the tensor mesons ${f}^{0}(1270)$ and ${K}^{*0}(1430)$ and the scalar meson $S(975)$ has been observed in ${e}^{+}{e}^{\ensuremath{-}}$ annihilation at 29 GeV center-of-mass energy by use of data obtained with the high-resolution spectrometer at the SLAC ${e}^{+}{e}^{\ensuremath{-}}$ storage ring PEP. The mean multiplicities for meson momenta greater than 1450 MeV/c are $〈{n}_{{f}^{0}}〉=0.11\ifmmode\pm\else\textpm\fi{}0.04$, $〈{n}_{{K}^{*0}(1430)}〉=0.10\ifmmode\pm\else\textpm\fi{}0.06$, and $〈{n}_{S}〉=0.05\ifmmode\pm\else\textpm\fi{}0.02$ 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.