2015/05/31 by V. Mathieu, Geoffrey Fox, G. Fox +2 · 2 citations
Physics and Astronomy · #Amplitude #Asymmetry #Atomic physics #Beam (structure) #Beam energy #Gravitational singularity #High-Energy Particle Collisions Research #Nuclear physics #Optics #Particle physics #Particle physics theoretical and experimental studies #Physics #Pion #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Resonance (particle physics) #Scattering #Scattering amplitude #Scattering cross-section #hep-ph
paper · pdf · doi:10.1103/physrevd.92.074013
published as Phys. Rev. D 92, 074013 (2015) · 13 pages, 6 figures. Material (codes, simulation, ...) available at http://www.indiana.edu/~jpac/index.html
openalex publication_date 2015/10/08 · arxiv created 2018/04/27 · arxiv updated 2018/04/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
The reaction \ensuremathγp\ensuremath→\ensuremathπ0p is investigated in the energy range above the resonance region. The amplitudes include the leading Regge singularities in the cross channel and correctly describe the differential cross section for beam energies above 4 GeV and for the s-channel scattering angle cos\ensuremathθs\ensuremath≥0.6. The energy dependence of the beam asymmetry and the reaction \ensuremathγn\ensuremath→\ensuremathπ0n seen is quantitatively consistent with the Regge-pole dominance.