2012/01/31 by K. Nakayama, Yongseok Oh, H. Haberzettl · 11 citations
Chemistry · Physics and Astronomy · #Advanced NMR Techniques and Applications #Hyperon #Nucleon #Parity (physics) #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-ph #nucl-ex #nucl-th
paper · pdf · doi:10.1103/physrevc.85.042201
published in Physical Review C 85(4) (American Institute of Physics) · 4 pages, REVTeX, to be published in Phys. Rev. C
arxiv created 2012/03/31 · openalex publication_date 2012/04/06 · arxiv updated 2013/05/29 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Based on reflection symmetry in the reaction plane, it is shown that measuring the transverse spin-transfer coefficient Kyy in the KN\ensuremath→K\ensuremathΞ reaction directly determines the parity of the produced cascade hyperon in a model-independent way as \ensuremathπ_\ensuremathΞ=Kyy, where \ensuremathπ_\ensuremathΞ=\ifmmode±\else\textpm\fi1 is the parity. This result based on Bohr's theorem provides a completely general, universal relationship that applies to the entire hyperon spectrum. A similar expression is obtained for the photoreaction \ensuremathγN\ensuremath→KK\ensuremathΞ by measuring both the double-polarization observable Kyy and the photon-beam asymmetry \ensuremathΣ. Regarding the feasibility of such experiments, it is pointed out that the self-analyzing property of the \ensuremathΞs can be invoked, thus requiring only a polarized nucleon target.