Λ-hyperon production via the pp → pK+ Λ reaction 2 MeV above threshold
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Volume 388, No. 4, Year 1996
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The pp → pK+ Λ reaction was measured at COSY with a proton beam momentum of 2.345 GeV/c, i.e. with an excess energy of 2 MeV above threshold. The total cross section was determined to be 8.2 ± 1.8 nb. The present data point close to the production threshold indicates, that existing phenomenological parametrizations of the total kaon production cross section are insufficient.