Model-independent aspects of the reactionK¯+N→K+Ξ

Abstract

Various model-independent aspects of theKN → K reaction are investigated, starting from the determination of the most general structure of the reaction amplitude for baryons with J P = 1 2 ± and 3 2 ± and the observables that allow a complete determination of these amplitudes. Polarization observables are constructed in terms of spin-density matrix elements. Reflection symmetry about the reaction plane is exploited, in particular, to determine the parity of the produced in a model-independent way. In addition, extending the work of Biagi et al. [Z. Phys. C 34, 175 (1987)], a way of determining simultaneously the spin and parity of the ground state of baryons as well as those of the excited states is presented.

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“…Very recently plans have been made for a secondary meson beam Facility at Jefferson Lab, which includes kaons, both charged and neutral [5]. One of the aims is to produce hyperons (≡ Y ), which are not as well studied as nucleons or deltas [6], and also cascade states, which are even less known [7,8].…”

Eta photoproduction in a combined analysis of pion- and photon-induced reactions

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Analysis of antikaon-induced cascade production

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