PT Journal
AU Nys, J
   Mathieu, V
   Fernandez-Ramirez, C
   Hiller Blin, AN
   Jackura, A
   Mikhasenko, M
   Pilloni, A
   Szczepaniak, AP
   Fox, G
   Ryckebusch, J
TI Finite-energy sum rules in eta photoproduction off a nucleon
SO Physical Review D
JI Phys. Rev. D
PY 2017
BP 034014
EP 20pp
VL 95
IS 3
DI 10.1103/PhysRevD.95.034014
LA English
AB The reaction gamma N -> eta N is studied in the high-energy regime (with photon lab energies E gamma(lab) > 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.
ER