@article{9425fe5eb3884f3d8a8e23fba62fbca4,
title = "Strange baryon production in hadronic Z0 decays",
abstract = "The production of the JP = 1/2+ octet baryons Λ and Ξ-, the JP = 3/2+ decuplet baryons Σ(1385)±, Ξ(1530)0, and Ω-, and the JP = 3/2- orbitally excited state Λ(1520) has been measured in a sample of approximately 3.65 million hadronic Z0 decays. The integrated rates and the differential cross-sections as a function of xE, the scaled energy, are determined. The differential cross-sections of the Λ and Ξ- baryons are found to be softer than those predicted by both the JETSET and HERWIG Monte Carlo generators. The measured baryon yields are found to disagree with the simple diquark picture where only one tuning parameter for spin 1 diquarks is allowed. The yields are further compared with a thermodynamic model of hadron production which includes the production of orbitally excited mesons and baryons. The momentum spectra of Λ, Ξ-, Σ(1385)±, Ξ(1530)0, and Λ(1520) are also compared to the predictions of an analytical QCD formula.",
author = "{The OPAL Collaboration} and G. Alexander and J. Allison and N. Altekamp and K. Ametewee and Anderson, {K. J.} and S. Anderson and S. Arcelli and S. Asai and D. Axen and G. Azuelos and Ball, {A. H.} and E. Barberio and Barlow, {R. J.} and R. Bartoldus and Batley, {J. R.} and J. Bechtluft and C. Beeston and T. Behnke and Bell, {A. N.} and Bell, {K. W.} and G. Bella and S. Bentvelsen and P. Berlich and S. Bethke and O. Biebel and V. Blobel and Bloodworth, {I. J.} and Bloomer, {J. E.} and M. Bobinski and P. Bock and Bosch, {H. M.} and M. Boutemeur and Bouwens, {B. T.} and S. Braibant and Brown, {R. M.} and Burckhart, {H. J.} and C. Burgard and R. B{\"u}rgin and P. Capiluppi and Carnegie, {R. K.} and Carter, {A. A.} and Carter, {J. R.} and Chang, {C. Y.} and C. Charlesworth and Charlton, {D. G.} and D. Chrisman and Chu, {S. L.} and Clarke, {P. E.L.} and I. Cohen and R. Folman",
note = "Funding Information: Acknowledgements. We particularly wish to thank the SL Division for the efficient operation of the LEP accelerator and for their continuing close co-operation with our experimental group.In addition to the support staff at our own institutions we are pleased to acknowledge the Department of Energy, USA, National Science Foundation, USA, Particle Physics and Astronomy Research Council, UK, Natural Sciences and Engineering Research Council, Canada, Israel Ministry of Science, Israel Science Foundation, administered by the Israel Academy of Science and Humanities, Minerva Gesellschaft, Japanese Ministry of Education, Science and Culture (the Monbusho) and a grant under the Monbusho International Science Research Program, German Israeli Bi-national Science Foundation (GIF), Direction des Sciences de la Mati{\`e}re du Commissariat {\`a} l{\textquoteright}Energie Atomique, France, Bundesmin-isterium f{\"u}r Bildung, Wissenschaft, Forschung und Technologie, Germany, National Research Council of Canada, Hungarian Foundation for Scientific Research, OTKA T-016660, and OTKA F-015089.",
year = "1997",
month = mar,
day = "1",
doi = "10.1007/s002880050349",
language = "English",
volume = "73",
pages = "569--585",
journal = "Zeitschrift fur Physik C-Particles and Fields",
issn = "0170-9739",
publisher = "Springer New York",
number = "4",
}