A measurement of the antiproton proton going to antilambda baryon lambda baryon and antiproton proon going to antisigma 0 lambda plus c.c. reactions at 1.726 GeV/c

摘要

The reactions $ar ppoarLambdaLambda$ and $ar ppoarSigmasp0Lambda+c.c.$ were investigated at an average antiproton momentum of 1.726 $pm$ 0.001 GeV/c using the Low Energy Antiproton Ring (LEAR) at CERN. Total and differential cross sections, hyperon polarizations, and spin correlation coefficients were measured for these strangeness production reactions. Emphasis was placed on a comparison of the data from the $ar ppoarLambdaLambda$ reaction with that measured for the $ar ppoarSigmasp0Lambda+c.c.$ reaction. A comparison of these complementary channels provides insight into the dynamics of strangeness production.