Photon and Light Meson Production in Hadronic Z^0 Decays

Details Photon and Light Meson Production in Hadronic Z^0 Decays Photon and Light Meson Production in Hadronic Z^0 Decays

1998-05-13

arxiv.org/abs/hep-ex/9805011v1

Eur.Phys.J.C5:411-437,1998

Physics

High Energy Physics

High Energy Physics - Experiment

53 pages, LaTeX, 15 eps figures included, submitted to Eur. Phys. J. C

Scientific paper

10.1007/s100520050286

The inclusive production rates and differential cross-sections of photons and mesons with a final state containing photons have been measured with the OPAL detector at LEP. The light mesons covered by the measurements are the \pi^0, \eta, \rho(770)+-, \omega(782), \eta'(958) and a_0(980)+-. The particle multiplicities per hadronic Z^0 decay, extrapolated to the full energy range, are: = 20.97 +/- 0.02 +/- 1.15, = 9.55 +/- 0.06 +/- 0.75, = 0.97 +/- 0.03 +/- 0.11, = 2.40 +/- 0.06 +/- 0.43, = 1.04 +/- 0.04 +/- 0.14, = 0.14 +/- 0.01 +/- 0.02, = 0.27 +/- 0.04 +/- 0.10. where the first errors are statistical and the second systematic. In general, the results are in agreement with the predictions of the JETSET and HERWIG Monte Carlo models.

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