Photoproduction of mesons off nuclei

Abstract

Recent results for the photoproduction of mesons off nuclei are reviewed. These experiments have been performed for two major lines of research related to the properties of the strong interaction. The investigation of nucleon resonances requires light nuclei as targets for the extraction of the isospin composition of the electromagnetic excitations. This is done with quasi-free meson photoproduction off the bound neutron and supplemented with the measurement of coherent photoproduction reactions, serving as spin and/or isospin filters. Furthermore, photoproduction from light and heavy nuclei is a very efficient tool for the study of the interactions of mesons with nuclear matter and the in-medium properties of hadrons. Experiments are currently rapidly developing due to the combination of high quality tagged (and polarized) photon beams with state-of-the-art 4pi detectors and polarized targets.

References in corpus (33)

• Ab-initio Determination of Light Hadron Masses
• Extended Partial-Wave Analysis of piN Scattering Data
• phi photo-production from Li, C, Al, and Cu nuclei at Egamma=1.5 - 2.4 GeV
• 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
• New results on the Roper resonance and the P_{11} partial wave
• Measurement of the dp -->3He eta reaction near threshold
• Modification of the $\omega$-Meson Lifetime in Nuclear Matter
• Excited hadrons on the lattice: Baryons
• Measurement of the beam asymmetry in eta-photoproduction off the proton
• Quasi-free photoproduction of eta-mesons of the neutron
• eta-photoproduction in the resonance energy region
• Eta-meson production in the resonance energy region
• Lattice QCD determination of patterns of excited baryon states
• Photoproduction of pi0-mesons from nuclei
• Is there an eta-3He quasi--bound state ?
• Quasi-free photoproduction of eta-mesons off the deuteron
• 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
• Photoproduction of $\eta$ mesons off neutrons from a deuteron target
• Evidence for a parity doublet Delta(1920)P_{33} and Delta(1940)D_{33}$ from γp\to pπ^0η
• 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
• Beam-Helicity Asymmetries in Double Pion Photoproduction off the Proton
• Radiative pi0 photoproduction on protons in the Delta+(1232) region
• Evidence for Narrow N*(1685) Resonance in Quasifree Compton Scattering on the Neutron
• Photoproduction of ${\eta }^{\prime }$-mesons off the deuteron
• Photoproduction of eta-mesons off nuclei for Eg < 2.2 GeV
• Precision study of the d+p->3He+eta reaction for excess energies between 20 and 60 MeV
• Incoherent pion photoproduction on ${}^{12}$C
• Low-energy pions in nuclear matter and 2pi photoproduction within a BUU transport model
• First measurement of the circular beam asymmetry in the gamma p --> pi0 eta p reaction
• Double pion photoproduction off 40Ca

Cited by in corpus (23)

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• Photoproduction Reactions and Non-Strange Baryon Spectroscopy
• A narrow structure in the excitation function of eta-photoproduction off the neutron
• Improved photomeson model for interactions of cosmic ray nuclei
• 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
• Photoproduction of pi0-mesons off neutrons in the nucleon resonance region
• Coherent photoproduction of pi^0- and eta-mesons off 7Li
• First measurement of the polarization observable $E$ and helicity-dependent cross sections in single ${\pi }^0$ photoproduction from quasi-free nucleons
• 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
• Coherent π0η photoproduction on s-shell nuclei
• Photoproduction of eta mesons from the neutron: cross sections and double polarization observable E
• Photoproduction of {\boldmath{${\pi }^0$}} Mesons off Protons and Neutrons in the Second and Third Nucleon Resonance Region
• Gamma Factory high-intensity muon and positron source: Exploratory studies
• First measurement of helicity-dependent cross sections in pi0-eta photoproduction from quasi-free nucleons
• Helicity-dependent cross sections for the photoproduction of ${\pi }^0$ pairs from nucleons
• A new measurement of the neutron detection efficiency for the NaI Crystal Ball detector
• Coherent photoproduction of the neutral pion and eta meson on the deuteron at incident energies below 1.15 GeV
• Double pion photoproduction off nuclei - are there effects beyond final-state interaction?
• Measurement of the beam-helicity asymmetry in photoproduction of ${\pi }^0\eta$ pairs on carbon, aluminum, and lead
• Helicity dependent cross sections for the photoproduction of ${\pi }^0{\pi }^{\pm }$ pairs from quasi-free nucleons
• Dynamical model of $\varphi$ meson photoproduction on the nucleon and ${}^{4}He$