Finite-energy sum rules in eta photoproduction off a nucleon
Abstract
The reaction γ N →η N 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.
- Publication:
-
Physical Review D
- Pub Date:
- February 2017
- DOI:
- 10.1103/PhysRevD.95.034014
- arXiv:
- arXiv:1611.04658
- Bibcode:
- 2017PhRvD..95c4014N
- Keywords:
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- High Energy Physics - Phenomenology
- E-Print:
- Joint Physics Analysis Center