Dynamical coupled-channel approach to hadronic and electromagnetic production of kaon-hyperon on the proton

Abstract

A dynamical coupled-channel formalism for processes $\pi N\to KY$ and $\gamma N\to KY$ is presented which provides a comprehensive investigation of recent data on the $\gamma p\to K^{+}\Lambda$ reaction. The non-resonant interactions within the subspace $KY\oplus \pi N$ are derived from effective Lagrangians, using a unitary transformation method. The calculations of photoproduction amplitudes are simplified by casting the coupled-channel equations into a form such that the empirical $\gamma N\to \pi N$ amplitudes are input and only the parameters associated with the $KY$ channel are determined by performing ${\chi }^2$-fits to all of the available data for ${\pi }^{-}p\to K^{\circ }\Lambda ,K^{\circ }{\Sigma }^{\circ }$ and $\gamma p\to K^{+}\Lambda$. Good agreement between our models and those data are obtained. In the fits to $\pi N\to KY$ channels, most of the parameters are constrained within $\pm 20$ of the values given by the Particle Data Group and/or quark model predictions, while for $\gamma p\to K^{+}\Lambda$ parameters, ranges compatible with broken $SU(6)\otimes O(3)$ symmetry are imposed. The main reaction mechanisms in $K^{+}\Lambda$ photoproduction are singled out and issues related to newly suggested resonances $S_{11}$, $P_{13}$, and $D_{13}$ are studied. Results illustrating the importance of using a coupled-channel treatment are reported. Meson cloud effects on the $\gamma N\to N^{\ast }$ transitions are also discussed.

Accepted Physical Review C

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• Neutral pion photoproduction off protons in the energy range 0.3 GeV < E(gamma) < 3 GeV
• Quark Model Study of The eta Photoproduction: Evidence for a New S11 Resonance?
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Cited by in corpus (67)

• Dynamical coupled-channel model of meson production reactions in the nucleon resonance region
• Nucleon resonances within a dynamical coupled-channels model of pi N and gamma N reactions
• First Measurement of Beam-Recoil Observables Cx and Cz in Hyperon Photoproduction
• ${\pi }^{+}$ photoproduction on the proton for photon energies from 0.725 to 2.875 GeV
• Determining pseudoscalar meson photo-production amplitudes from complete experiments
• eta-photoproduction in the resonance energy region
• Eta-meson production in the resonance energy region
• Dynamical Coupled-Channels Effects on Pion Photoproduction
• Measurement of beam-recoil observables Ox, Oz and target asymmetry for the reaction gamma p -> K Lambda
• The role of $N^{\ast }(1535)$ in $pp\to pp\varphi$ and ${\pi }^{-}p\to n\varphi$ reactions
• Kaon photoproduction in a multipole approach
• Spallation reactions. A successful interplay between modeling and applications
• Dynamical coupled-channels model of $K^{-}p$ reactions (I): Determination of partial-wave amplitudes
• Nucleon resonance decay by the $K^0{\Sigma }^{+}$ channel
• Light Baryon Spectroscopy
• Dynamical coupled-channels study of pi N --> pi pi N reactions
• Regge-plus-resonance treatment of the p(gamma,K^+)Sigma^0 and p(gamma,K^0)Sigma^+ reactions at forward kaon angles
• Searching for signatures around 1920 MeV of a $N^{\ast }$ state of three hadron nature
• The impact of ${\mathbf{K}}^{+}\mathbf{\Lambda }$ photoproduction on the resonance spectrum
• On the nature of the lowest $1/2^{-}$ baryon nonet and decuplet
• Coupled-channels study of the ${\pi }^{-}p\to \eta n$ process
• Bayesian inference of the resonance content of p(gamma,K^+)Lambda
• A Bayesian analysis of kaon photoproduction with the Regge-plus-resonance model
• Beam-Recoil Polarization Transfer in the Nucleon Resonance Region in the Exclusive $\vec{e}p\to e^{\prime }{K}^{+}\vec{\Lambda }$ and $\vec{e}p\to e^{\prime }{K}^{+}{\vec{\Sigma }}^0$ Reactions at CLAS
• P-wave excited baryons from pion- and photo-induced hyperon production
• Photoproduction of $K\Lambda$ on the proton
• Electromagnetic production of kaon near threshold
• Electroproduction of kaons from the proton in a Regge-plus-resonance approach
• Polarized Structure Function ${\sigma }_{L{T}^{\prime }}$ for $p(\vec{e},e^{\prime }{K}^{+})\Lambda$ in the Nucleon Resonance Region
• Origin of the second peak in the cross section of the $K^{+}\Lambda$ photoproduction
• Coupled-channel analysis of $K\Sigma$ production on the nucleon up to 2.0 GeV
• Photo- and electroproduction of $K^{+}\Lambda$ with unitarity-restored isobar model
• Cross Sections for the $\gamma p\to K^{\ast 0}{\Sigma }^{+}$ Reaction at $E_{\gamma }=1.7-3.0$ GeV
• Study of $\eta$ photoproduction on the proton in a chiral constituent quark approach via one-gluon-exchange model
• Measurement of the $\vec{\gamma }p\to K^{+}\Lambda$ Reaction at Backward Angles
• The role of the N*(1535) resonance and the pi^- p --> KY amplitudes in the OZI forbidden pi N --> phi N reaction
• The associated photoproduction of K+ meson off proton within a coupled-channels K-matrix approach
• Associated strangeness production in the pp to pK^+K^-p and pp to pK^+ pi^0 Sigma^0 reactions
• Role of the $N^{\ast }$(1535) in the $J/\psi \to \bar{p}\eta p$ and $J/\psi \to \bar{p}{K}^{+}\Lambda$ reactions
• Combined study of gamma p to eta p and pi-p to eta n in a chiral constituent quark approach
• Separated Structure Functions for Exclusive $K^{+}\Lambda$ and $K^{+}{\Sigma }^0$ Electroproduction at 5.5 GeV with CLAS
• Energy-independent PWA of the reaction $\gamma p\to K^{+}\Lambda$
• Exclusive electroproduction of K+ Lambda and K+ Sigma^0 final states at Q^2 = 0.030-0.055 (GeV/c)^2
• Study of nucleon resonances with electromagnetic interactions
• New fits to the reaction $\gamma p\to K^{+}\Lambda$
• Coupled $K^{+}\Lambda$ and $K^0\Lambda$ photoproduction off the nucleon: Consequences from the recent CLAS and MAMI data and the $N(1680)P_{11}$ narrow state
• Coupling strength of the $N^{\ast }(1535)S_{11}$ to the $K^{+}\Lambda$ channel
• $\eta$ production off the proton in a Regge-plus-chiral quark approach
• A chiral quark model for meson electro-production in the S11 partial wave
• Role of the $N^{\ast }(2080)$ in $pp\to p{K}^{+}\Lambda (1520)$ and ${\pi }^{-}p\to K^0\Lambda (1520)$ reactions
• Search for missing baryon resonances via associated strangeness photoproduction
• Chiral constituent quark model study of the process $\gamma p\to \eta p$
• Photoproduction of $K^{+}\Lambda$ with a Regge-plus-resonance model
• Complementary studies on $N^{\ast }$ from $e^{+}{e}^{-}$, $pp$ and $p\bar{p}$ collisions
• Nucleon resonances in the ${\pi }^{-}p\to K^0\Lambda$ reaction near threshold
• Theory of the electromagnetic production of hyperons
• Combined analysis of the ${\pi }^{-}p\to K^0\Lambda$, $\eta n$ reactions in a chiral quark model
• Photon induced K$\Lambda$ production on the proton in the low energy region
• Ridge regression for minimizing the couplings of hyperon resonances in the $K^{+}\Lambda$ photoproduction
• Gerasimov-Drell-Hearn Sum Rule and the Discrepancy between the New CLAS and SAPHIR Data
• $J/\psi \to p\bar{p}\varphi$ decay in the isobar resonance model
• Charged lepton induced one kaon production off the nucleon
• Configuration Mixing of Quark States in Baryons
• Weak production of strange $\Xi$ baryons off the nucleon
• Kaon photoproduction on the nucleon with constrained parameters
• Irreducible tensor approach to spin observables in photo production of mesons with arbitrary spin-parity $s^{\pi }$
• A Simple Quark Model for γp -> K^+ Λ^0