Production Of Sigma(0) And Omega(-) In Z Decays
W. 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ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS（1996）
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摘要
Reconstructed ii baryon decays and photon conversions in DELPHI are used to measure the Sigma(0) production rate from hadronic Z(0) decays at LEP. The number of Sigma(0) decays per hadronic Z decay is found to be:> = 0.070 +/- 0.010 (stat.) +/- 0.010 (syst.).The Omega(-) production rate is similarly measured to be: = 0.0014 +/- 0.0002 (stat.) +/- 0.0004 (syst.)by a combination of methods using constrained fits to the whole decay chain and particle identification.
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