Eta and kaon production in a chiral quark model

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 K0Sigma+ photo-production 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 at 1685 MeV in the eta n channel.

14 pages, 12 figures, to appear in EPJ A

References in corpus (21)

• Extended Partial-Wave Analysis of piN Scattering Data
• Nucleon resonances within a dynamical coupled-channels model of pi N and gamma N reactions
• Evidence for a narrow structure at W~1.68 GeV in eta photoproduction on the neutron
• Measurement of eta photoproduction on the proton from threshold to 1500 MeV
• Measurement of the reaction gamma p --> K0 Sigma+ at photon energies up to 2.6 GeV
• eta-photoproduction in the resonance energy region
• Quasi-free photoproduction of eta-mesons of the neutron
• Measurement of beam-recoil observables Ox, Oz and target asymmetry for the reaction gamma p -> K Lambda
• A gauge invariant chiral unitary framework for kaon photo- and electroproduction on the proton
• Nucleon resonance decay by the $K^0{\Sigma }^{+}$ channel
• Quasifree photoproduction of $\eta$ mesons off protons and neutrons
• Photoproduction of $\eta$ mesons off neutrons from a deuteron target
• Photoproduction of eta meson within a coupled-channels K-matrix approach
• A Bayesian analysis of kaon photoproduction with the Regge-plus-resonance model
• Electromagnetic production of kaon near threshold
• Photo- and electroproduction of the K^0Lambda near threshold and effects of the K^0 electromagnetic form factor
• Electromagnetic production of $K\Sigma$ on the nucleon near threshold
• Measurement of the g p -> K^0 Sigma^+ reaction with the Crystal Ball/TAPS detectors at the Mainz Microtron
• A chiral quark model for meson electro-production in the region of D-wave resonances
• Roper resonances in chiral quark models
• Sign ambiguity in the K Sigma channel

Cited by in corpus (6)

• The impact of ${\mathbf{K}}^{+}\mathbf{\Lambda }$ photoproduction on the resonance spectrum
• Eta and Etaprime Photoproduction on the Nucleon with the Isobar Model EtaMAID2018
• Light baryon resonances from a coupled-channel study including $\mathbf{K\Sigma }$ photoproduction
• The Roper resonance: a genuine quark state or a dynamically generated structure?
• Dynamical generation of resonances in the P33 partial wave
• The $\Lambda (1405)$ resonance as a genuine three-quark or molecular state