Measurement of inclusive production of light meson resonances in hadronic decays of the Z0
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DELPHI Collaboration; Allen, Paul; Chrin, J. T. M.; Castillo Giménez, María Victoria; Cortina Gil, Eduardo; Ferrer Soria, Antonio; Fuster Verdú, Juan A.; Fez Laso, M. D. M. de; Gómez Cadenas, Juan José; García García, Carmen; Hernández Rey, Juan José; Higón Rodríguez, Emilio; Lacasta Llácer, Carlos; Lozano Bahilo, José Julio; Martí García, Salvador; Salt Cairols, José; Valls Ferrer, Juan Antonio; Zúñiga Román, Juan
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Aquest document és un/a article, creat/da en: 1993
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A study of inclusive production of the meson resonances rho0, K*0 (892), f0(975) and f2(1270) in hadronic decays of the Z0 is presented. The measured mean meson multiplicity per hadronic event is 0.83 +/- 0.14 for the rho0, 0.64 +/- 0.24 for the K*0(892). 0.10 +/- 0.04 for the f0(975) in the momentum range p > 0.05p(beam) (x(p) > 0.05) and 0.11 +/- 0.05 for the f2 (1270) for x(p) > 0. 1. These values and the corresponding differential cross sections (1/sigma(hadr)) dsigma/dx(p) for the vector mesons are in good agreement with the predictions of the JETSET 7.3 PS and HFRWIG 5.4 models. The f2 (1270) production is overestimated by HERWIG but its x(p)-shape is correctly reproduced. The measured ratios of the production cross sections sigma (f2(1270))/sigma(rho0) = 0.22 +/- 0.08 and sigma(f2(1270))/sigma(f0(975)) = 3(-1)+7 for x(p) > 0.1 are consistent with the results obtained in hadronic reactions.
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