6533b855fe1ef96bd12b0abc
RESEARCH PRODUCT
Structure of pion photoproduction amplitudes
Vincent MathieuA. JackuraAlessandro PilloniAdam P. SzczepaniakAdam P. SzczepaniakCésar Fernández-ramírezGeoffrey C. FoxA. N. Hiller BlinJannes Nyssubject
Particle physicsStructure (category theory)FOS: Physical sciences01 natural sciencesPOLARIZED PHOTONSCHARGED PIONSPionHigh Energy Physics - Phenomenology (hep-ph)0103 physical sciencesT DISPERSION-RELATIONSPhysics and Astronomy (miscellaneous); high energy; pion photoproduction010306 general physicsCOMPTON-SCATTERINGPhysicsREGGE-POLES010308 nuclear & particles physicsObservablePI0 PHOTOPRODUCTIONQuantum numberBaryonRegge theoryHigh Energy Physics - PhenomenologyAmplitudeBARYON RESONANCESPhysics and AstronomyPI-0 PHOTOPRODUCTIONMESON PHOTOPRODUCTIONENERGY SUM-RULESEnergy (signal processing)description
We derive and apply the finite energy sum rules to pion photoproduction. We evaluate the low energy part of the sum rules using several state-of-the-art models. We show how the differences in the low energy side of the sum rules might originate from different quantum number assignments of baryon resonances. We interpret the observed features in the low energy side of the sum rules with the expectation from Regge theory. Finally, we present a model, in terms of a Regge-pole expansion, that matches the sum rules and the high-energy observables.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-07-31 |