An isobar model for eta photo- and electroproduction on the nucleon

Abstract

Eta photo- and electroproduction on the nucleon is studied using an isobar model. The model contains Born terms, and contributions from vector meson exchanges and nucleon resonances. Our results are compared with recent eta photoproduction data for differential and total cross sections, beam asymmetry, and target asymmetry, as well as electroproduction data. Besides the dominant S11(1535) resonance, we show that the second S11 resonance, S11(1650), is also necessary to be included in order to extract S11(1535) resonance parameters properly. In addition, the beam asymmetry data allow us to extract very small (<0.1%) N* --> eta N decay branching ratios of the D13(1520) and F15(1680) resonances because of the overwhelming s-wave dominance. This model (ETA-MAID) is implemented as a part of the MAID program.

27 pages, 13 eps figures, uses elsart.cls and bm.sty, submitted to Nucl.Phys.A

References in corpus (5)

• The e p -> e' p eta reaction at and above the S11(1535) baryon resonance
• Quark Model Study of The eta Photoproduction: Evidence for a New S11 Resonance?
• Photoproduction of eta and eta-prime mesons off nucleons close to threshold
• Two-body effects in coherent eta-meson photoproduction on the deuteron in the region of the S_11(1535) resonance
• Threshold eta and eta' electroproduction off nucleons

Cited by in corpus (84)

• Electroexcitation of nucleon resonances
• Coupled-channel dynamics in the reactions piN --> piN, etaN, KLambda, KSigma
• Electromagnetic Meson Production in the Nucleon Resonance Region
• Study of Non-Strange Baryon Resonances with Meson Photoproduction
• Dispersion Relation Constrained Partial Wave Analysis of piN Elastic and piN\to\etaN Scattering Data: The Baryon Spectrum
• Study of the gp-->etap reaction with the Crystal Ball detector at the Mainz Microtron(MAMI-C)
• Evidence for a narrow structure at W~1.68 GeV in eta photoproduction on the neutron
• Unified Chew-Mandelstam SAID analysis of pion photoproduction data
• A reggeized model for eta and eta-prime photoproduction
• Measurement of eta photoproduction on the proton from threshold to 1500 MeV
• Eta photoproduction in a combined analysis of pion- and photon-induced reactions
• Precision tests of fundamental physics with $\eta$ and ${\eta }^{\prime }$ mesons
• Q^2 Dependence of the S_{11}(1535) Photocoupling and Evidence for a P-wave resonance in eta electroproduction
• Measurement of the beam asymmetry in eta-photoproduction off the proton
• Quasi-free photoproduction of eta-mesons of the neutron
• Electroexcitation of the P33(1232), P11(1440), D13(1520), S11(1535) at Q^2=0.4 and 0.65(GeV/c)^2
• 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
• Eta Meson Production in NN Collisions
• Electroexcitation of nucleon resonances at Q^2=0.65 GeV/c^2 from a combined analysis of single- and double-pion electroproduction data
• Quasifree photoproduction of $\eta$ mesons off protons and neutrons
• Linearly polarised photon beams at ELSA and measurement of the beam asymmetry in pi^0-photoproduction off the proton
• Photoproduction of eta-mesons on the deuteron above S11(1535) in the presence of a narrow P11(1670) resonance
• Pion photoproduction off the proton in a gauge-invariant chiral unitary framework
• Study of $\eta$ and ${\eta }^{\prime }$ photoproduction at MAMI
• Photoproduction of $\eta$ mesons off neutrons from a deuteron target
• Resonance Contributions to $\eta$ Photoproduction on Protons Found Using Dispersion Relations and an Isobar Model
• Photoproduction of mesons off nuclei
• Proton polarizability effect in the Lamb shift of the hydrogen atom
• Novel approaches in Hadron Spectroscopy
• A narrow structure in the excitation function of eta-photoproduction off the neutron
• Photoproduction of eta meson within a coupled-channels K-matrix approach
• Eta and Etaprime Photoproduction on the Nucleon with the Isobar Model EtaMAID2018
• The Gerasimov-Drell-Hearn Sum Rule and the Spin Structure of the Nucleon
• Pion- and photo-induced transition amplitudes to $\Lambda K$, $\Sigma K$, and $N\eta$
• Electroproduction of Eta Mesons in the S11(1535) Resonance Region at High Momentum Transfer
• 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
• $\eta$ photoproduction on the quasi-free nucleons in the chiral quark model
• XYZ spectroscopy at electron-hadron facilities: Exclusive processes
• Excitation of S11 resonances in pion scattering and pion photoproduction on the proton
• Study of π^{-}p \to ηn at low energies in a chiral constituent quark model
• Jülich-Bonn-Washington Model for Pion Electroproduction Multipoles
• Magnetic dipole moment of the S11(1535) from the γp \to γηp reaction
• Insight into the narrow structure in {\boldmath{$\eta$}}-photoproduction on the neutron from helicity dependent cross sections
• Quasi-free photoproduction of eta-mesons off 3He nuclei
• New Narrow Nucleon N*(1685)
• Helicity-dependent cross sections and double-polarization observable E in eta photoproduction from quasi-free protons and neutrons
• CP-violating decays of the pseudoscalars eta and eta' and their connection to the electric dipole moment of the neutron
• Photoproduction of ηmesons on protons in the resonance region:The background problem and the third S_11 resonance
• ${\gamma }^{\ast }N\to N(1710)$ transition at high momentum transfer
• Coupled-channel analysis of pion- and eta-electroproduction with the Jülich-Bonn-Washington model
• Eta meson production in nucleon-nucleon collisions within an effective Lagrangian model
• Observation of the $p{\eta }^{\prime }$ Cusp in the New Precise Beam Asymmetry $\Sigma$ Data for $\gamma p\to p\eta$
• Photoproduction of $\eta$-mesons off C and Cu nuclei for photon energies below 1.1 GeV
• The MAID Legacy and Future
• A chiral quark model for meson electro-production in the S11 partial wave
• Systematic study of octet-baryon electromagnetic form factors in covariant chiral perturbation theory
• Photoproduction of eta mesons from the neutron: cross sections and double polarization observable E
• eta photoproduction and N* resonances
• Recoil polarization and beam-recoil double polarization measurement of ηelectroproduction on the proton in the region of the S_{11}(1535) resonance
• Global analysis of charge exchange meson production at high energies
• Toward a unified description of hadro- and photoproduction: S-wave pi- and eta-photoproduction amplitudes
• Fixed-t analyticity as a constraint in single energy partial wave analyses of meson photoproduction reactions
• Eta Photoproduction as a Test of the Extended Chiral Symmetry
• Photo-absorption on deuteron contributed by d^*(2380) resonance
• Photoproduction of eta and etaprime mesons on the nucleon
• Electroproduction of $\Lambda (1520)$ off the nucleon target with the nucleon resonances
• Energy dependent analysis of eta-meson photoproduction on protons and neutrons without background in the energy region up to 3.4 GeV
• Photoproduction of $\eta$ mesons off the proton for $1.2<E_{\gamma }<4.7$ GeV using CLAS at Jefferson Laboratory
• Photoproduction of $\eta$ and ${\eta }^{\prime }$ Mesons on Proton
• Final remarks to our study of $\eta$-photoproduction on protons in the resonance region
• Hadron structure at small momentum transfer
• Charged current (anti)neutrino induced eta production off the nucleon
• Experimental study of $\eta$ meson photoproduction reaction at MAMI
• Chiral quark model approach for the study of baryon resonances
• The role of pion exchange in $\eta$ meson photo production on the deuteron
• A study of the elastic $\pi N$ scattering at finite baryon density
• Photoproductions of $f_1(1285)$ and ${\eta }^{\prime }(958)$ from the analysis of CLAS data with the Primakoff effect at high energies
• Scalar meson production in nucleon-nucleon collisions near threshold
• Dynamics of the near threshold eta meson production in proton-proton interaction
• The correction of hadronic nucleus polarizability to hyperfine structure of light muonic atoms
• Physics at ELSA