publication . Article . Preprint . 2015

Eta photoproduction in a combined analysis of pion- and photon-induced reactions

Michael Döring; Johann Haidenbauer; Helmut Haberzettl; Ulf-G. Meißner; Ulf-G. Meißner; D. Rönchen; K. Nakayama; K. Nakayama;
Open Access
  • Published: 07 Apr 2015 Journal: The European Physical Journal A, volume 51 (issn: 1434-6001, eissn: 1434-601X, Copyright policy)
  • Publisher: Springer Science and Business Media LLC
  • Country: Germany
The $\eta N$ final state is isospin-selective and thus provides access to the spectrum of excited nucleons without being affected by excited $\Delta$ states. To this end, the world database on eta photoproduction off the proton up to a center-of-mass energy of $E\sim 2.3$ GeV is analyzed, including data on differential cross sections, and single and double polarization observables. The resonance spectrum and its properties are determined in a combined analysis of eta and pion photoproduction off the proton together with the reactions $\pi N\to \pi N$, $\eta N$, $K\Lambda$ and $K\Sigma$. For the analysis, the so-called J\"ulich coupled-channel framework is used, ...
arXiv: High Energy Physics::Experiment
free text keywords: Nuclear and High Energy Physics, Nuclear Theory, High Energy Physics - Phenomenology, Nuclear Experiment, Unitarity, Nucleon, Asymmetry, media_common.quotation_subject, media_common, Hadron, Particle physics, Proton, Isospin, Nuclear physics, Excited state, Physics, Pion, ddc:530
Funded by
Study of Strongly Interacting Matter
  • Funder: European Commission (EC)
  • Project Code: 283286
  • Funding stream: FP7 | SP4 | INFRA
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