Coupled-channel analysis of $K\Sigma$ production on the nucleon up to 2.0 GeV

Abstract

A coupled-channel effective Lagrangian model respecting unitary and gauge invariance is applied to the combined analysis of the $(\pi ,\gamma )N\to K\Sigma$ reactions for the center of mass energies up to 2 GeV. The recent photoproduction data obtained by the CLAS, CBELSA, LEPS, and GRAAL groups are included into our calculations with the aim to extract the resonance couplings to the $K\Sigma$ state. Both resonances and background contributions are found to be important to reproduce a correct shape of the angular distributions and polarization observables. Our description to the data is of good quality. The extracted properties of isospin $I=3/2$ resonances are discussed in detail while the $I=1/2$ resonances are largely determined by the non-strangeness channels.

published version. 25 pages + 17 figures

References in corpus (15)

• Measurement of the reaction gamma p --> K0 Sigma+ at photon energies up to 2.6 GeV
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• P-wave excited baryons from pion- and photo-induced hyperon production
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• Phenomenological study on the $\bar{p}N\to \bar{N}N\pi \pi$ reactions
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Cited by in corpus (22)

• 50 Years of Quantum Chromodynamics
• Photocouplings at the Pole from Pion Photoproduction
• The impact of ${\mathbf{K}}^{+}\mathbf{\Lambda }$ photoproduction on the resonance spectrum
• Kaon Photoproduction and the $\Lambda$ Decay Parameter ${\alpha }_{-}$
• Light baryon resonances from a coupled-channel study including $\mathbf{K\Sigma }$ photoproduction
• Nucleon resonances in $\gamma p\to K^{\ast +}\Lambda$
• Photoproduction of strange hidden-charm and hidden-bottom states
• Towards the Minimal Spectrum of Excited Baryons
• Double-polarization observable G in neutral-pion photoproduction off the proton
• Sign ambiguity in the K Sigma channel
• Neutral pion photoproduction on the nucleon in a chiral quark model
• $2\pi$ production in the Giessen coupled-channel model
• Photo- and electro-production of narrow exotic states: from light quarks to charm and up to bottom
• Photoproduction $\gamma p\to K^{\ast +}\Lambda$ in a Reggeized model
• Reexamination of the role of the ${\Delta }^{\ast }$ resonances in the $pp\to n{K}^{+}{\Sigma }^{+}$ reaction
• The nucleon resonances in the $J/\psi \to p\bar{p}{\eta }^{\prime }$ decay
• Compton scattering off proton in the third resonance region
• Disentangle the nature of resonances in coupled-channel models
• Complex phase structure of the meson-baryon $T$-matrix
• Photoproduction $\gamma p\to K^{+}\Lambda (1690)$ in an effective Lagrangian approach
• Nuclear Reactions at Intermediate Energies
• Production and Interactions of Hyperons and Hypernuclei