2012/05/15 by V. M. Braun, A. N. Manashov, B. Pirnay · 49 citations
Mathematics · Physics and Astronomy · #Amplitude #Compton scattering #Formalism (music) #Geometry #Helicity #High-Energy Particle Collisions Research #Kinematics #Mathematical physics #Mathematics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Scalar (mathematics) #Scattering #Twist #hep-ph
paper · pdf · doi:10.1103/physrevd.86.014003
published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 86(1) (American Physical Society) · 17 pages, 2 figures
arxiv created 2012/05/15 · openalex publication_date 2012/07/05 · arxiv updated 2014/10/21 · openalex created_date 2016/10/21 · openalex updated_date 2026/08/05
Using the recently developed formalism we carry out the first complete calculation of kinematic power corrections to the helicity amplitudes of deeply-virtual Compton scattering to the twist-four accuracy for a study case of a (pseudo)scalar target. Our main result is that both finite-t, \ensuremath∼t/Q2, and target mass, \ensuremath∼m2/Q2, twist-four kinematic power corrections turn out to be factorizable, at least to the leading order in the strong coupling. The structure of these corrections is discussed and a short model study of their numerical impact is presented.