Updated SAID analysis of pion photoproduction data

Abstract

Energy-dependent and single-energy fits to the existing pion photoproduction database have been updated to cover the region from threshold to 2.7 GeV in the laboratory photon energy. Revised resonance photo-decay couplings have been extracted and compared to previous determinations. The influence of recent measurements is displayed. Remaining problems and future approaches are discussed.

9 pages, 6 figures, 3 tables

References in corpus (7)

• Unitary Isobar Model - MAID2007
• Extended Partial-Wave Analysis of piN Scattering Data
• Linearly polarised photon beams at ELSA and measurement of the beam asymmetry in pi^0-photoproduction off the proton
• Photoproduction of $\eta$ mesons off neutrons from a deuteron target
• P-wave excited baryons from pion- and photo-induced hyperon production
• Radiative pi0 photoproduction on protons in the Delta+(1232) region
• Beam asymmetry $\Sigma$ measurements on the ${\pi }^{-}$ photoproduction off neutrons

Cited by in corpus (25)

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• Eta-meson production in the resonance energy region
• Well-established nucleon resonances revisited by double-polarization measurements
• First measurement of the helicity asymmetry for $\gamma p\to p{\pi }^0$ in the resonance region
• Bayesian inference of the resonance content of p(gamma,K^+)Lambda
• A Bayesian analysis of kaon photoproduction with the Regge-plus-resonance model
• Helicity amplitudes for photoexcitation of nucleon resonances off neutrons
• Coupled-channel analysis of $K\Sigma$ production on the nucleon up to 2.0 GeV
• Dispersion Theory in Electromagnetic Interactions
• Neutral Pion Photoproduction in a Regge Model
• The N(1520) 3/2- helicity amplitudes from an energy-independent multipole analysis based on new polarization data on photoproduction of neutral pions
• Amplitude analysis of gamma n --> pi- p data above 1 GeV
• The polarization observables T, P, and H and their impact on $\gamma p\to p{\pi }^0$ multipoles
• Measurement of the ${}^{1}H$($\vec{\gamma }$, $\vec{p}$)${\pi }^0$ reaction using a novel nucleon spin polarimeter
• Evaluation of the gn-->pi-p differential cross sections in the Delta-isobar region
• Energy-independent PWA of the reaction $\gamma p\to K^{+}\Lambda$
• Neutral pion photoproduction on the nucleon in a chiral quark model
• On the Photoproduction Reactions $\gamma d\to \pi NN$
• Structure of Pion Photoproduction Amplitudes
• The nucleon resonances in the $J/\psi \to p\bar{p}{\eta }^{\prime }$ decay
• Compton scattering off proton in the third resonance region
• SAID Analysis of Meson Photoproduction : Determination of Neutron and Proton EM Couplings
• The Joint Physics Analysis Center: Recent results
• New Analysis of Threshold Photoproduction Data from MAMI