Elsevier

Nuclear Physics B

Volume 99, Issue 1, 17 November 1975, Pages 30-52
Nuclear Physics B

Measurement of the differential cross section and the spin-correlation parameters P, A and R in the backward peak of πp→K0Λ at 5 GeV/c

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Abstract

We present measurements for the baryon-exchange reaction πp→ΛK0 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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Work supported in part by the Swiss National Science Foundation.

Now at the Max-Planck Institute, Munich.

‡‡

Now at the Nuclear Research Institute, Baghdad.

‡‡‡

Now at CERN, Geneva.

Now at the University of Birmingham.

∗∗

Now at Imperial College, London.

∗∗∗

Now at University of Geneva.

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