The reaction γN→ηN is studied in the high-energy regime (with photon lab energies Eγlab>4 GeV) using information from the resonance region through the use of finite-energy sum rules. 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.
Finite-energy sum rules in eta photoproduction off a nucleon
Pilloni A.;
2017-01-01
Abstract
The reaction γN→ηN is studied in the high-energy regime (with photon lab energies Eγlab>4 GeV) using information from the resonance region through the use of finite-energy sum rules. 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.File in questo prodotto:
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