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arXiv · 1611.04658

Finite-Energy Sum Rules in Eta Photoproduction off the Nucleon

JPAC Collaboration·J. Nys·V. Mathieu·C. Fernández-Ramírez·A. N. Hiller Blin·A. Jackura·M. Mikhasenko·A. Pilloni·A. P. Szczepaniak·G. Fox·J. Ryckebusch
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Abstract

The reaction $γN \to ηN$ is studied in the high-energy regime (with photon lab energies $E_γ^{\textrm{lab}} > 4$ GeV) using information from the resonance region through the use of finite-energy sum rules (FESR). We illustrate how analyticity allows one to map the t-dependence of the unknown Regge residue functions. We provide predictions for the energy dependence of the beam asymmetry at high energies.

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JPAC Collaboration, J. Nys, V. Mathieu, C. Fernández-Ramírez, A. N. Hiller Blin, A. Jackura, M. Mikhasenko, A. Pilloni, A. P. Szczepaniak, G. Fox, J. Ryckebusch. 2017-08-08. Finite-Energy Sum Rules in Eta Photoproduction off the Nucleon. https://doi.org/10.1103/physrevd.95.034014

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