Phys. Rev. D 66, 052002 (2002) [11 pages]Correlated inclusive ΛΛ̅ production in e+e- annihilations at √s∼10.5GeVReceived 4 June 2002; published 16 September 2002 Using a 13.7fb-1 sample of continuum two-jet e+e-→qq̅ events collected with the CLEO detector, we have searched for correlations between Λ and Λ̅ particles, specifically in cases where the opening angle between the two particles is large and each has momentum >1GeV/c. Such correlations may indicate the presence of baryon number conservation at the primary quark level. A previous CLEO study of ΛcΛ̅ c correlations indicated direct, associated production of primary charmed baryons Λc: e+e-→cc̅ →ΛcΛ̅ c. That effect was not observed in Monte Carlo simulations. Our current search for similar direct, associated production of Λ baryons at the primary quark level (e+e-→ss̅ →ΛΛ̅ , e.g.) qualitatively indicates a similar effect, although it relies on a Monte Carlo dependent subtraction of background ΛΛ̅ production (based on the default JETSET 7.4 event generator). © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.66.052002
DOI:
10.1103/PhysRevD.66.052002
PACS:
13.65.+i, 13.30.-a, 13.60.Rj, 14.20.Lq
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.