Asymmetries in the production of lambda zero, cascade minus, and omega minus hyperons in 500 GeV/c pi minus-Nucleon Interactions
Abstract
Using data from Fermilab fixed-target experiment E791, we have measured particle-antiparticle production asymmetries for lambda zero, cascade minus, and omega minus hyperons in pi minus-nucleon interactions at 500 GeV/c. The asymmetries are measured as functions of Feynman-x (xF) and pt2 over the ranges of -0.12 GE xF LE 0.12 and 0 GE pt2 LE 4 (GeV/c)2. We find substantial asymmetries, even at xF = 0. We also observe leading-particle- type asymmetries which qualitatively agree with theoretical predictions.
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