Phenomenological model for the (K)over-barN -> K Xi reaction

作者：Sharov D A^*; Korotkikh V L; Lanskoy D E

来源：European Physical Journal A, 2011, 47(9): 109.

DOI：10.1140/epja/i2011-11109-1

A phenomenological model for the (K) over barN -> K Xi reaction is suggested. The model includes s and u channel exchanges by Lambda Sigma, Sigma(1385), and Lambda(1520) and s channel exchanges by above-threshold hyperonic resonances. The explicit expression for the propagator for a particle with spin 7/2 is presented. High-mass and high-spin resonances play a significant role in the process. We deal with the whole set of existing experimental data on the cross-sections and polarizations in the energy range from the threshold to 2.8 GeV in the center-of-mass system and reach a good agreement with experiments. Applications of the model to other elementary reactions of Xi production and to Xi hypernuclear spectroscopy are briefly discussed.

• 出版日期2011-9