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Eta and kaon production in a chiral quark model

  • Regular Article - Theoretical Physics
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Abstract.

We apply a coupled-channel formalism incorporating quasi-bound quark-model states to calculate pion scattering into \(\eta N\), \(K \Lambda\) and \(K \Sigma\) channels, as well \(\eta p\), \( \eta n\), \(K^{+} \Lambda\), and \(K^{0} \Sigma^{+}\) photoproduction processes. The meson-baryon and photon-baryon vertices are determined in a SU(3) version of the Cloudy Bag Model. Our model predicts sizable amplitudes in the P11, P13, P33 and S11 partial waves in agreement with the latest MAID isobar model and the recent partial-wave analyses of the Bonn-Gatchina group. We are able to give a quark-model explanation for the apparent resonance near 1685 MeV in the \( \eta n\) channel.

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Authors and Affiliations

  1. Faculty of Education, University of Ljubljana and J. Stefan Institute, 1000, Ljubljana, Slovenia

    B. Golli

  2. Faculty of Mathematics and Physics, University of Ljubljana and J. Stefan Institute, 1000, Ljubljana, Slovenia

    S. Širca

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  1. B. Golli
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  2. S. Širca
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Correspondence to B. Golli.

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Communicated by R. Alkofer

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Golli, B., Širca, S. Eta and kaon production in a chiral quark model. Eur. Phys. J. A 52, 279 (2016). https://doi.org/10.1140/epja/i2016-16279-6

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  • DOI: https://doi.org/10.1140/epja/i2016-16279-6

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