Extraction of Electrostrong Parameters of $N^{\ast }(1520)$ from Eta Photoproduction

Abstract

Recently obtained polarized target and photon asymmetry data in eta photoproduction are shown to be very powerful, in conjunction with the differential cross-section data, in yielding model-insensitive constraints on the electrostrong parameters for the excitation and decay of the $N^{\ast }(1520)$ resonance. The extracted ratio of its electromagnetic helicity amplitudes, $A_{3/2}/A_{1/2}$, provides a critical test for the QCD-inspired hadron models.

ReVTeX, 5 pages, corrected Table II and corresponding text

References in corpus (1)

• eta-meson photoproduction off protons and deuterons

Cited by in corpus (13)

• Study of Non-Strange Baryon Resonances with Meson Photoproduction
• An isobar model for eta photo- and electroproduction on the nucleon
• Differential cross section measurement of eta photoproduction on the proton from threshold to 1100 MeV
• Neutral pion photoproduction off protons in the energy range 0.3 GeV < E(gamma) < 3 GeV
• The helicity amplitudes A${}_{1/2}$ and A${}_{3/2}$ for the D${}_{13}(1520)$ resonance obtained from the $\vec{\gamma }\vec{p}\to p{\pi }^0$ reaction}
• Photoproduction of eta meson within a coupled-channels K-matrix approach
• Analysis of resonance multipoles from polarization observables in eta photoproduction
• The associated photoproduction of K+ meson off proton within a coupled-channels K-matrix approach
• Quark model approach to the $\eta$ meson electroproduction on the proton
• Extraction of the D13(1520) photon-decay couplings from pion- and eta-photoproduction data
• The Role of the D13 (1520) Resonance in eta Electroproduction
• Pole versus Breit-Wigner resonance description of the orbitally excited baryons
• Irreducible tensor approach to spin observables in photo production of mesons with arbitrary spin-parity $s^{\pi }$