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arXiv · 1103.1699

Role of high-spin hyperon resonances in the reaction of $γp \to K^+ K^+ Ξ^-$

J. Ka Shing Man·Yongseok Oh·K. Nakayama
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Abstract

The recent data taken by the CLAS Collaboration at the Thomas Jefferson National Accelerator Facility for the reaction of $γp \to K^+ K^+ Ξ^-$ are reanalyzed within a relativistic meson-exchange model of hadronic interactions. The present model is an extension of the one developed in an earlier work by Nakayama, Oh, and Haberzettl [Phys. Rev. C 74, 035205 (2006)]. In particular, the role of the spin-5/2 and -7/2 hyperon resonances, which were not included in the previous model, is investigated in the present study. It is shown that the contribution of the $Σ(2030)$ hyperon having spin-7/2 and positive parity has a key role to bring the model predictions into a fair agreement with the measured data for the $K^+Ξ^-$ invariant mass distribution.

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J. Ka Shing Man, Yongseok Oh, K. Nakayama. 2011-03-09. Role of high-spin hyperon resonances in the reaction of $γp \to K^+ K^+ Ξ^-$. https://doi.org/10.1103/physrevc.83.055201

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