[en] A high energy polarized proton beam which would utilize lambda decays as a source of polarized protons was proposed. We discuss the operation of such a beam and related physics experiments. 12 references

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[en] The result of a feasibility study to measure the Λ polarization in associated K⁺-Λ electro-production is presented. This measurement was performed in the experimental Hall C at Jefferson Lab. The scattered electron was detected in the HMS spectrometer, and the electro-produced kaon and the proton from the Λ→pπ^- decay were both detected in the SOS spectrometer. This quantity is very sensitive to the elementary p(e,e'K)Λ process and gives information on resonance production, and Regge exchange, among others. The result presented was measured at Q²=1.50 (GeV/c)² and cosθ_Kγ^CM=14 deg. The limits of the Λ polarization, with respect to the p_γxp_K axis, were found to be -0.21 and +0.89 with a confidence level of 68%. The result is compared to theoretical predictions based on an effective hadronic field Lagrangian model and a Regge framework model

[en] An experimental description of the spin precession technique in hyperon beams is presented, including a description of the systematic error study which led to the precise measurement of the Σ⁺ magnetic moment in Fermilab-E761 experiment. copyright 1996 American Institute of Physics

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[en] The purpose of the note is to discuss two particular [1/1] Pade approximants (PA) of baryon propagators, the comparison of which gives an idea of the domain of validity of the approximation. The propagators considered are the nucleon propagator and the Λ hyperon propagator. It is shown that a [1/1] PA can only produce a very limited class of elastic resonances

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