Inclusive Sigma+ and Sigma0 Production in Hadronic Z Decays
High Energy Physics - Experiment
2012-08-27 v1
Abstract
We report on measurements of the inclusive production rate of Sigma+ and Sigma0 baryons in hadronic Z decays collected with the L3 detector at LEP. The Sigma+ baryons are detected through the decay Sigma+ -> p pi0, while the Sigma0 baryons are detected via the decay mode Sigma0 -> Lambda gamma. The average numbers of Sigma+ and Sigma0 per hadronic Z decay are measured to be: < N_Sigma+ > + < N_Sigma+~ > = 0.114 +/- 0.011 (stat) +/- 0.009 (syst), < N_Sigma0 > + < N_Sigma0~ > = 0.095 +/- 0.015 (stat) +/- 0.013 (syst). These rates are found to be higher than the predictions from Monte Carlo hadronization models and analytical parameterizations of strange baryon production.
Cite
@article{arxiv.hep-ex/0002066,
title = {Inclusive Sigma+ and Sigma0 Production in Hadronic Z Decays},
author = {L3 Collaboration},
journal= {arXiv preprint arXiv:hep-ex/0002066},
year = {2012}
}