Abstract
We present measurements for the baryon-exchange reaction π −p→ ΛK 0 at 5 GeV/ c over the range − u<2(GeV/ c) 2. The differential cross section is obtained from events produced on a liquid hydrogen target. These data are combined with events produced on a butanol polarized target and the parameters P, A, and R are then determined from an analysis of the decay angular distribution of the forward-going Λ. From our data it is possible to determine the magnitudes and the relative phase of the two invariant amplitudes A′ and B. The consequences for the ratio B/ A′ are discussed in detail.
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