par Abreu, Pedro;Bertrand, Daniel 
;Bricman, Claude ;Vander Velde, Catherine ;Wickens, John H. ; [et al.]
Référence Physics letters. Section B, 298, 1-2, page (236-246)
Publication Publié, 1993
;Bricman, Claude ;Vander Velde, Catherine ;Wickens, John H. ; [et al.]Référence Physics letters. Section B, 298, 1-2, page (236-246)
Publication Publié, 1993
Article révisé par les pairs
| Résumé : | A study of inclusive production of the meson resonances ρ0, 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 ρ0, 0.64 ± 0.24 for the K*0(892), 0.10 ± 0.04 for the f0(975) in the momentum range p > 0.05pbeam (xp > 0.05) and 0.11 ± 0.05 for the f2(1270) for xp > 0.1. These values and the corresponding differential cross sections (1/σhadr) dσ/dxp for the vector mesons are in good agreement with the predictions of the JETSET 7.3 PS and HERWIG 5.4 models. The f2(1270) production is overestimated by HERWIG but its xp-shape is correctly reproduced. The measured ratios of the production cross sections σ(f2(1270))/σ(ρ0) = 0.22 ± 0.08 and σ(f2(1270))/σ(f0(975)) = 3-1 +7 for xp > 0.1 are consistent with the results obtained in hadronic reactions. |
