Production of hyperon resonances induced by kaons on a deuteron target

The K - d → πY N reaction is theoretically studied to investigate the K −-induced production of the hyperon resonances Σ(1385) and Λ(1405). For this purpose, we take into account the p-wave amplitudes for meson-baryon two-body scatterings as well as the s-wave amplitudes. Due to the fact that the hy...

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Bibliographic Details
Published in:Progress of theoretical and experimental physics 2013-04, Vol.2013 (4), p.43
Main Authors: Yamagata-Sekihara, J., Sekihara, T., Jido, D.
Format: Article
Language:English
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Summary:The K - d → πY N reaction is theoretically studied to investigate the K −-induced production of the hyperon resonances Σ(1385) and Λ(1405). For this purpose, we take into account the p-wave amplitudes for meson-baryon two-body scatterings as well as the s-wave amplitudes. Due to the fact that the hyperon resonances are selectively produced from the channel in this reaction, the Λ(1405) peak appears at 1420 MeV, which implies that Λ(1405) and Σ(1385) could be separately seen in the missing-mass spectrum of the emitted nucleon in the K − d → nX reaction. The πY invariant-mass spectrum in this study is consistent with experimental data both for Σ(1385) and Λ(1405). The pion exchange contributions are also included and are found to give a smooth background without distorting the peak structure of the hyperon resonances. AMS Subject Classification D32
ISSN:2050-3911
2050-3911
DOI:10.1093/ptep/ptt009