Study of Non-Strange Baryon Resonances with Meson Photoproduction

Abstract

Photoproduction of mesons is an excellent tool for the study of nucleon resonances. Complementary to pion induced reactions, photoproduction on the free proton contributes to the determination of the basic properties of nucleon resonances like excitation energy, decay widths, spin, and the coupling to the photon. Photoproduction from light nuclei, in particular from the deuteron, reveals the isospin structure of the electromagnetic excitation of the nucleon. During the last few years, progress in this field has been substantial. New accelerator facilities combined with state-of-the-art detector technologies have pushed the experiments to unprecedented sensitivity and precision. The experimental progress has been accompanied by new developments for the reaction models, necessary to extract the properties of the nucleon states, and for modern hadron models which try to connect these properties to QCD. The emphasis of this review lies on the experimental side and focuses on experiments aiming at precise studies of the low-lying nucleon resonances.

arXiv comment87 pages, 67 figures, Prog. Part. Nucl. Phys., accepted

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Cited by in corpus (92)

• Baryon spectroscopy
• Electromagnetic excitation of the Delta(1232)-resonance
• Progress Toward Understanding Baryon Resonances
• Electromagnetic Meson Production in the Nucleon Resonance Region
• Neutron skins of atomic nuclei: per aspera ad astra
• Photoproduction of $\eta$ and $\eta \prime$ Mesons off Protons
• Decays of Baryon Resonances into K Lambda, K^+ Sigma^0 and K^0 Sigma^+
• Q^2 Dependence of the S_{11}(1535) Photocoupling and Evidence for a P-wave resonance in eta electroproduction
• Quasi-free photoproduction of eta-mesons of the neutron
• Coherent photoproduction of eta-mesons off 3He - search for eta-mesic nuclei
• Photoproduction of pi0-mesons from nuclei
• On the cross section ratio sigma_n/sigma_p in eta photoproduction
• Quasi-free photoproduction of eta-mesons off the deuteron
• Quasifree photoproduction of $\eta$ mesons off protons and neutrons
• Light Baryon Spectroscopy
• Transition form factors of the N*(1535) as a dynamically generated resonance
• Effective Lagrangian Approach to pion photoproduction from the nucleon
• Photoproduction Reactions and Non-Strange Baryon Spectroscopy
• Photoproduction of mesons off nuclei
• A narrow structure in the excitation function of eta-photoproduction off the neutron
• Photoproduction of eta meson within a coupled-channels K-matrix approach
• The Gerasimov-Drell-Hearn Sum Rule and the Spin Structure of the Nucleon
• Electroproduction of Eta Mesons in the S11(1535) Resonance Region at High Momentum Transfer
• Hadron structure at low Q^2
• Photoproduction of pi0pi0 and pi0pi+-pairs off the proton from threshold to the second resonance region
• Beam-Helicity Asymmetries in Double Pion Photoproduction off the Proton
• $\eta$ photoproduction on the quasi-free nucleons in the chiral quark model
• Magnetic moments of the low-lying {1/2}^- octet baryon resonances
• Photoproduction of ${\eta }^{\prime }$-mesons off the deuteron
• Novel two-to-three hard hadronic processes and possible studies of generalized parton distributions at hadron facilities
• Photoproduction of eta-mesons off nuclei for Eg < 2.2 GeV
• Photo- and Electrocouplings of Nucleon Resonances
• Amplitude analysis of gamma n --> pi- p data above 1 GeV
• Insight into the narrow structure in {\boldmath{$\eta$}}-photoproduction on the neutron from helicity dependent cross sections
• Measurement of the beam-helicity asymmetry $I^{\odot }$ in the photoproduction of ${\pi }^0$-pairs off the proton and off the neutron
• Quasi-free photoproduction of eta-mesons off 3He nuclei
• Properties of Nucleon Resonances by means of a Genetic Algorithm
• Photoproduction of pi0-mesons off neutrons in the nucleon resonance region
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• First measurement of the polarization observable $E$ and helicity-dependent cross sections in single ${\pi }^0$ photoproduction from quasi-free nucleons
• Helicity-dependent cross sections and double-polarization observable E in eta photoproduction from quasi-free protons and neutrons
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• Analysis of Dilepton Invariant Mass Spectrum in C+C at 2 and 1 AGeV
• Measurement of the beam-helicity asymmetry $I^{\odot }$ in the photoproduction of ${\pi }^0{\pi }^{\pm }$-pairs off protons and off neutrons
• Photoproduction ofeta-pi pairs off nucleons and deuterons
• Photoproduction of mesons from nuclei - In-medium properties of hadrons
• Measurements of the ${\gamma }_{v}p\to p^{\prime }{\pi }^{+}{\pi }^{-}$ cross section with the CLAS detector for $0.4$ GeV${}^2$ $<Q^2<$ $1.0$ GeV${}^2$ and $1.3$ GeV $<W<$ $1.825$ GeV
• Magnetic moments of the low-lying $J^P=1/2^{-}$, $3/2^{-}$ $\Lambda$ resonances within the framework of the chiral quark model
• Neutral pion photoproduction on the nucleon in a chiral quark model
• The magnetic moments and electromagnetic form factors of the decuplet baryons in chiral perturbation theory
• Hints on the quadrupole deformation of the $\Delta$(1232)
• Photoproduction of eta mesons from the neutron: cross sections and double polarization observable E
• Nuclear mass form factors from coherent photoproduction of ${\pi }^0$ mesons
• Upper limit on the decay Sigma(1385)- --> Sigma- gamma, and cross section for gamma Sigma- --> Lambda pi-
• 70 Years of Hyperon Spectroscopy: A review of strange $\Xi$, $\Omega$ baryons, and the spectrum of charmed and bottom baryons
• Magnetic moments of negative-parity baryons in QCD
• Photoproduction of {\boldmath{${\pi }^0$}} Mesons off Protons and Neutrons in the Second and Third Nucleon Resonance Region
• Magnetic moments of $J^P={\frac{3}{2}}^{-}$ baryons in QCD
• Pion Photoproduction off Nucleon with Hamiltonian Effective Field Theory
• Eta Photoproduction as a Test of the Extended Chiral Symmetry
• Helicity-dependent cross sections for the photoproduction of ${\pi }^0$ pairs from nucleons
• Analysis of the quadrupole deformation of $\Delta$(1232) within an effective Lagrangian model for pion photoproduction from the nucleon
• Spin observables for pion photoproduction on the deuteron in the $\Delta$(1232)-resonance region
• Final-state $NN$-rescattering in spin asymmetries of $d(\gamma ,{\pi }^{-})pp$ reaction
• Measurement of the radiative decay width Γ[Λ(1520) --> Λγ] with the SPHINX spectrometer
• Double pion photoproduction off nuclei - are there effects beyond final-state interaction?
• Spectral-fluctuations test of the quark-model baryon spectrum
• Investigation of the anomaly in eta-photoproduction off the neutron
• Two Pion Production in Photon Induced Reactions
• Influence of $NN$-rescattering effect on the photon asymmetry of $d(\vec{\gamma },{\pi }^{-})pp$ reaction
• In-Medium Properties of Hadrons
• πN and ηp deexcitation channels of the N^* and Δbaryonic resonances between 1470 and 1680 MeV
• Spin asymmetry for the 16O(gamma,pi- p) reaction in the Delta(1232) region within an effective Lagrangian approach
• General analysis of polarization effects in coherent pseudoscalar mesons photo-- and electroproduction on deuteron
• Helicity dependent cross sections for the photoproduction of ${\pi }^0{\pi }^{\pm }$ pairs from quasi-free nucleons
• Photoproduction of ${\pi }^0$-Mesons on the Nucleon and Deuteron
• Unified approach to photo and electro-production of mesons with arbitrary spins
• Spectral-statistics properties of the experimental and theoretical light baryon and meson spectra
• Irreducible tensor approach to spin observables in photo production of mesons with arbitrary spin-parity $s^{\pi }$
• Rotation and vibration in tetraquarks
• Experimental Review of Baryons in the Nuclear Medium
• In-medium properties of nucleon resonances
• Quasi-free photoproduction of pion-pairs off protons and neutrons
• Magnetic moment for the negative parity $\Lambda \to {\Sigma }^0$ transition in light cone QCD sum rules
• A quark model framework for the study of nuclear medium effects
• Hadrons in Nuclei: Experiments and Perspectives
• Double Pion Photoproduction from Nuclei
• The Helicity Amplitude for $1/2$ and $3/2^{+}$ Baryon in the Pseudo-Meson Photoproduction in the Quark Model
• Relativistically invariant analysis of $\Delta$--isobar production in deuteron electrodisintegration: $e^{-}+d\to e^{-}+\Delta +N:$ general analysis of polarization effects