Eta-meson production in the resonance energy region

Abstract

We perform an updated coupled-channel analysis of eta-meson production including all recent photoproduction data on the proton. The dip observed in the differential cross sections at c.m. energies W=1.68 GeV is explained by destructive interference between the $S_{11}(1535)$ and $S_{11}(1560)$ states. The effect from $P_{11}(1710)$ is found to be small but still important to reproduce the correct shape of the differential cross section. For the ${\pi }^{-}N\to \eta N$ scattering we suggest a reaction mechanism in terms of the $S_{11}(1535)$, $S_{11}(1560)$, and $P_{11}(1710)$ states. Our conclusion on the importance of the $S_{11}(1535)$, $S_{11}(1560)$, and $P_{11}(1710)$ resonances in the eta-production reactions is in line with our previous results. No strong indication for a narrow state with a width of 15 MeV and the mass of 1680 MeV is found in the analysis. $\eta N$ scattering length is extracted and discussed.

replaced with a published version, pole parameters and scattering lengths are added

References in corpus (62)

• Non perturbative chiral approach to s-wave \bar{K}N interactions
• Diquarks and Exotic Spectroscopy
• Exotic Anti-Decuplet of Baryons: Prediction from Chiral Solitons
• Extended Partial-Wave Analysis of piN Scattering Data
• Quasi-Two-Body Decays of Nonstrange Baryons
• Properties of baryon resonances from a multichannel partial wave analysis
• Evidence for a missing nucleon resonance in kaon photoproduction
• Strange Decays of Nonstrange Baryons
• Photon- and meson-induced reactions on the nucleon
• Updated resonance photo-decay amplitudes to 2 GeV
• Analytic properties of the scattering amplitude and resonances parameters in a meson exchange model
• Baryon Resonance Extraction from piN Data using a Unitary Multichannel Model
• Vector meson production and nucleon resonance analysis in a coupled-channel approach for energies m_N < sqrt(s) < 2 GeV I: pion-induced results and hadronic parameters
• A unitary model for meson-nucleon scattering
• Vector meson production and nucleon resonance analysis in a coupled-channel approach for energies m_N < sqrt(s) < 2 GeV II: photon-induced results
• Photoproduction of eta mesons off protons for photon energies from 0.75 GeV to 3 GeV
• Study of the gp-->etap reaction with the Crystal Ball detector at the Mainz Microtron(MAMI-C)
• Photoproduction of $\eta$ and $\eta \prime$ Mesons off Protons
• Evidence for a narrow structure at W~1.68 GeV in eta photoproduction on the neutron
• pi N --> eta N and eta N --> eta N partial wave T-matrices in a coupled, three channel model
• Coupled-channel analysis of the $\omega$-meson production in $\pi N$ and $\gamma N$ reactions for c.m. energies up to 2 GeV
• A coupled-channel analysis of $K\Lambda$ production in the nucleon resonance region
• Pion-nucleon scattering in a meson-exchange model
• Differential cross sections for the reactions gamma p-> p eta and gamma p -> p eta-prime
• Nonstrange and other unitarity partners of the exotic Theta+ baryon
• A reggeized model for eta and eta-prime photoproduction
• Measurement of eta photoproduction on the proton from threshold to 1500 MeV
• Differential cross section measurement of eta photoproduction on the proton from threshold to 1100 MeV
• Measurement of the beam asymmetry in eta-photoproduction off the proton
• eta-photoproduction in the resonance energy region
• Quasi-free photoproduction of eta-mesons of the neutron
• Form factors and photoproduction amplitudes
• Dynamical coupled-channel approach to hadronic and electromagnetic production of kaon-hyperon on the proton
• The Eta-Nucleon Scattering Length and Effective Range
• On the cross section ratio sigma_n/sigma_p in eta photoproduction
• Kaon photoproduction in a multipole approach
• Quasi-free photoproduction of eta-mesons off the deuteron
• Photoproduction of eta-mesons on the deuteron above S11(1535) in the presence of a narrow P11(1670) resonance
• Photoproduction of $\eta$ mesons off neutrons from a deuteron target
• Photoproduction of eta meson within a coupled-channels K-matrix approach
• Extracting the photoproduction cross section off the neutron gn-->pi-p from deuteron data with FSI effects
• Analysis of resonance multipoles from polarization observables in eta photoproduction
• A Bayesian analysis of kaon photoproduction with the Regge-plus-resonance model
• Updated SAID analysis of pion photoproduction data
• $\eta$ photoproduction on the quasi-free nucleons in the chiral quark model
• Spin-5/2 resonance contributions to the pion-induced reactions for energies $\sqrt{s}⩽$2.0 GeV
• Extraction of radiative decay width for the non-strange partner of Theta^+
• Study of π^{-}p \to ηn at low energies in a chiral constituent quark model
• Singularity structure of the pi N scattering amplitude in a meson-exchange model up to energies W < 2.0 GeV
• The piN --> etaN data demand the existence of N(1710) P11 resonance reducing the 1700 MeV continuum ambiguity
• Strong decay of low-lying $S_{11}$ and $D_{13}$ nucleon resonances to pseudoscalar mesons and octet baryons
• Combined analysis of eta meson hadro- and photo-production off nucleons
• eta-meson photoproduction off protons and deuterons
• Eta-photoproduction in a gauge-invariant chiral unitary framework
• A novel interpretation of the "${\Theta }^{+}(1540)$ pentaquark" peak
• In-medium modifications of the S11(1535) resonance and eta photoproduction
• Partial-wave analysis of π-p {\to} ηn and π-p {\to} K0Λ reactions
• eta photoproduction and N* resonances
• Analysis of recent eta photoproduction data
• Search for Higher Flavor Multiplets in Partial Wave Analyses
• The re-analysis of the 1700 MeV structure of the P11 partial wave using the piN->KLambda production data
• Measurement of the polarization observables T, P, H in pseudoscalar meson photoproduction with the CBELSA/TAPS experiment

Cited by in corpus (51)

• Baryons as relativistic three-quark bound states
• Progress Toward Understanding Baryon Resonances
• 50 Years of Quantum Chromodynamics
• Coupled-channel dynamics in the reactions piN --> piN, etaN, KLambda, KSigma
• Electromagnetic Excitation of Nucleon Resonances
• Eta photoproduction in a combined analysis of pion- and photon-induced reactions
• Photocouplings at the Pole from Pion Photoproduction
• On the cross section ratio sigma_n/sigma_p in eta photoproduction
• Quasi-free photoproduction of eta-mesons off the deuteron
• $K^{+}\Lambda$ and $K^{+}{\Sigma }^0$ photoproduction with fine center-of-mass energy resolution
• Eta-nuclear bound states revisited
• Light Baryon Spectroscopy
• Study of $\eta$ and ${\eta }^{\prime }$ photoproduction at MAMI
• Photoproduction of $\eta$ mesons off neutrons from a deuteron target
• Photoproduction of mesons off nuclei
• Pion- and photo-induced transition amplitudes to $\Lambda K$, $\Sigma K$, and $N\eta$
• Measurement of the transverse target and beam-target asymmetries in $\eta$ meson photoproduction at MAMI
• Finite-Energy Sum Rules in Eta Photoproduction off the Nucleon
• The complete experiment for photoproduction of pseudoscalar mesons in a truncated partial wave analysis
• Strong evidence for nucleon resonances near 1900\,MeV
• Coupled-channel analysis of $K\Sigma$ production on the nucleon up to 2.0 GeV
• In-medium Eta-Nucleon interactions and Eta nuclear bound states
• $\bar{K}+N\to K+\Xi$ reaction and $S=-1$ hyperon resonances
• Quasi-free photoproduction of eta-mesons off 3He nuclei
• New data on $\vec{\gamma }\vec{p}\to \eta p$ with polarized photons and protons and their implications for $N^{\ast }\to N\eta$ decays
• Chirally motivated separable potential model for $\eta N$ amplitudes
• Role of the $N^{\ast }(1535)$ in the ${\Lambda }_c^{+}\to {\bar{K}}^0\eta p$ decay
• Influence of the axial anomaly on the decay $N(1535)\to N\eta$
• Neutral pion photoproduction on the nucleon in a chiral quark model
• Determining the dominant partial wave contributions from angular distributions of single- and double-polarization observables in pseudoscalar meson photoproduction
• $2\pi$ production in the Giessen coupled-channel model
• Sign ambiguity in the K Sigma channel
• Photoproduction of eta mesons from the neutron: cross sections and double polarization observable E
• $K^0\Lambda$ photoproduction off the neutron with nucleon resonances
• Photo- and electro-production of narrow exotic states: from light quarks to charm and up to bottom
• The Roper resonance: a genuine quark state or a dynamically generated structure?
• Observation of Narrow $N^{+}(1685)$ and $N^0(1685)$ Resonances in $\gamma N\to \eta \pi N$ Reactions
• The near threshold ${\pi }^{-}p\to \eta n$ reaction in an effective Lagrangian approach
• Regge phenomenology of the $N^{\ast }$ and ${\Delta }^{\ast }$ poles
• Combined analysis of the ${\pi }^{-}p\to K^0\Lambda$, $\eta n$ reactions in a chiral quark model
• Eta and kaon production in a chiral quark model
• Energy dependent analysis of eta-meson photoproduction on protons and neutrons without background in the energy region up to 3.4 GeV
• The nucleon resonances in the $J/\psi \to p\bar{p}{\eta }^{\prime }$ decay
• Theory of Majorana-Type Heavy Ion Double Charge Exchange Reactions by Pion--Nucleon Isotensor Interactions
• Configuration Mixing of Quark States in Baryons
• Compton scattering off proton in the third resonance region
• Experimental study of $\eta$ meson photoproduction reaction at MAMI
• Baryon Spectroscopy - Recent Results from the CBELSA/TAPS Experiment
• Understanding the 1P- and 2S-wave nucleon resonances within the extended Lee-Friedrichs Model
• Double polarisation experiments in meson photoproduction
• Nuclear Reactions at Intermediate Energies