Observation ofΩ−Production ine+e−Annihilation at 29 GeV
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Observation ofΩ−Production ine+e−Annihilation at 29 GeV

S. R. Klein,T. Himel,G. Abrams,D. Amidei,A. R. Baden,T. Barklow,A. M. Boyarski,J. Boyer,P. R. Burchat,D. L. Burke,F. Butler,J. M. Dorfan,G. J. Feldman,G. Gidal,L. Gladney,M. S. Gold,G. Goldhaber,L. Golding,J. Haggerty,G. Hanson,K. Hayes,D. Herrup,R. J. Hollebeek,W. R. Innes,J. A. Jaros,I. Juricic,J. A. Kadyk,D. Karlen,A. J. Lankford,R. R. Larsen,B. W. LeClaire,M. Levi,N. S. Lockyer,V. Lüth,C. Matteuzzi,M. E. Nelson,R. A. Ong,M. L. Perl,A. Petersen,B. Richter,K. Riles,P. C. Rowson,T. Schaad,H. Schellman,W. B. Schmidke,P. D. Sheldon,G. H. Trilling,C. de la Vaissière,D. R. Wood,J. M. Yelton;S. R. Klein;T. Himel;G. Abrams;D. Amidei;A. R. Baden;T. Barklow;A. M. Boyarski;J. Boyer;P. R. Burchat;D. L. Burke;F. Butler;J. M. Dorfan;G. J. Feldman;G. Gidal;L. Gladney;M. S. Gold;G. Goldhaber;L. Golding;J. Haggerty;G. Hanson;K. Hayes;D. Herrup;R. J. Hollebeek;W. R. Innes;J. A. Jaros;I. Juricic;J. A. Kadyk;D. Karlen;A. J. Lankford;R. R. Larsen;B. W. LeClaire;M. Levi;N. S. Lockyer;V. Lüth;C. Matteuzzi;M. E. Nelson;R. A. Ong;M. L. Perl;A. Petersen;B. Richter;K. Riles;P. C. Rowson;T. Schaad;H. Schellman;W. B. Schmidke;P. D. Sheldon;G. H. Trilling;C. de la Vaissière;D. R. Wood;J. M. Yelton;
physical review letters 1987 Vol. 59 pp. 2412-2415
125
yelton1987physicalobservation

Abstract

Inclusive Ω− production in e+e− annihilation at 29 GeV has been measured with the Mark II detector. From an integrated luminosity of 207 pb−1, we determine a production rate of 0.014±0.006±0.004 Ω−, Ω¯+ per hadronic event. This is roughly 35 times the Lund-model prediction of 0.0004 Ω−, Ω¯+ per hadronic event, but comparable to the Webber-model prediction of 0.006 Ω−, Ω¯+ per hadronic event. The large rate of Ω− production, compared with production rates for other baryons, and with theoretical predictions based on diquark models, indicates that spin suppression does not hold for Ω− production.

Keywords

differential cross section production model

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DOI:
10.1103/physrevlett.59.2412
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https://sciprofiles.com/publication/view/25de39775...

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ID: 272156
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