Conference paper

Appeared in: NSTAR 2001: Proceedings of the workshop on the physics of excited nucleons

Editor list: Drechsel, D.

Publication year: 2001

Pages: 207-212

ISBN: 981-02-4760-5

eISBN: 978-981-02-4760-7

DOI Link: https://doi.org/10.1142/9789812810878_0030

Conference: Workshop on the Physics of Excited Nucleons (NSTAR 2001)

Abstract: 

Eta photoproduction on the nucleon is studied in a coupled-channels approach based on an effective Lagrangian. We compare to new differential cross section and beam asymmetry data data from the GRAAL collaboration. At energies above the S₁₁(1535) region we find no sign of p-wave nucleon resonance contributions. The forward-peaking of the beam asymmetry data at higher energy is explained in terms of vector meson t-channel contributions. These new polarization data also reveal a novel role played by the D₁₃(1700) state, similar to the role of the D₁₃(1520) at lower energy.

Harvard Citation style: Waluyo, A., Bennhold, C., Penner, G. and Mosel, U. (2001) Eta photoproduction in a coupled-channels approach, in Drechsel, D. (ed.) NSTAR 2001: Proceedings of the workshop on the physics of excited nucleons. Singapore: World Scientific. pp. 207-212. https://doi.org/10.1142/9789812810878_0030

APA Citation style: Waluyo, A., Bennhold, C., Penner, G., & Mosel, U. (2001). Eta photoproduction in a coupled-channels approach. In Drechsel, D. (Ed.), NSTAR 2001: Proceedings of the workshop on the physics of excited nucleons. (pp. 207-212). World Scientific. https://doi.org/10.1142/9789812810878_0030