Analysis of resonance multipoles from polarization observables in eta photoproduction
| dc.creator | Tiator, L. | |
| dc.creator | Drechsel, D. | |
| dc.creator | Knoechlein, G. | |
| dc.creator | Bennhold, C. | |
| dc.date | 1999-02-11 | |
| dc.date.accessioned | 2026-07-07T10:34:38Z | |
| dc.date.available | 2026-07-07T10:34:38Z | |
| dc.description | A combined analysis of new eta photoproduction data for total and differential cross sections, target asymmetry and photon asymmetry is presented. Using a few reasonable assumptions we perform the first model-independent analysis of the E0+, E2- and M2- eta photoproduction multipoles. Making use of the well-known A3/2 helicity amplitude of the D13(1520) state we extract its branching ratio to the eta-N channel, Gamma(eta,N)/Gamma = (0.08 +- 0.01)%. At higher energies, we show that the photon asymmetry is extremely sensitive to small multipoles that are excited by photons in the helicity 3/2 state. The new GRAAL photon asymmetry data at higher energy show a clear signal of the F15(1680) excitation which permits extracting an F15(1680)->eta,N branching ratio of (0.15 +0.35 -0.10)%. | |
| dc.description | 14 pages of LATEX including 7 postscript figures | |
| dc.identifier | https://arxiv.org/abs/nucl-th/9902028 | |
| dc.identifier | http://arxiv.org/abs/nucl-th/9902028 | |
| dc.identifier | Phys.Rev.C60:035210,1999 | |
| dc.identifier | doi:10.1103/PhysRevC.60.035210 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/179542 | |
| dc.subject | Nuclear Theory | |
| dc.title | Analysis of resonance multipoles from polarization observables in eta photoproduction | |
| dc.type | text |