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arXiv · hep-ex/9802013

Production of f_0(980), f_2(1270) and ϕ(1020) in hadronic Z^0 decay

The OPAL Collaboration·K. Ackerstaff et al
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Abstract

Inclusive production of the f_0(980), f_2(1270) and ϕ(1020) resonances has been studied in a sample of 4.3 million hadronic Z^0 decays from the OPAL experiment at LEP. A coupled channel analysis has been used for the f_0 in simultaneous fits to the resonances in inclusive π+π- and K+K- mass spectra. Fragmentation functions are reported for the three states. Total inclusive rates are measured to be 0.141 +/- 0.007 +/- 0.011 f_0, 0.155 +/- 0.011 +/- 0.018 f_2, and 0.091 +/- 0.002 +/- 0.003 ϕmesons per hadronic Z^0 decay. The production properties of the f_0, including those in three-jet events, are compared with those of the f_2 and ϕ, and with the Lund string model of hadron production. All measurements are consistent with the hypothesis that the f_0 is a conventional qq(bar) scalar meson.

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The OPAL Collaboration, K. Ackerstaff et al. 1998-02-12. Production of f_0(980), f_2(1270) and ϕ(1020) in hadronic Z^0 decay. https://doi.org/10.1007/s100520050183

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