On timelike and spacelike deeply virtual Compton scattering at next to leading order
arXiv:1301.3819 · doi:10.1103/PhysRevD.87.054029
Abstract
We study timelike and spacelike virtual Compton scattering in the generalized Bjorken scaling regime at next to leading order in the strong coupling constant, in the medium energy range which will be studied intensely at JLab12 and in the COMPASS-II experiment at CERN. We show that the Born amplitudes get sizeable O(α_s) corrections and, even at moderate energies, the gluonic contributions are by no means negligible. We stress that the timelike and spacelike cases are complementary and that their difference deserves much special attention.
References in corpus (9)
- Parton distributions for the LHC
- Towards a fitting procedure for deeply virtual Compton scattering at next-to-leading order and beyond
- Measurement of Azimuthal Asymmetries With Respect To Both Beam Charge and Transverse Target Polarization in Exclusive Electroproduction of Real Photons
- NLO corrections to timelike, spacelike and double deeply virtual Compton scattering
- Beam-helicity asymmetry arising from deeply virtual Compton scattering measured with kinematically complete event reconstruction
- A fitter code for Deep Virtual Compton Scattering and Generalized Parton Distributions
- Can one measure timelike Compton scattering at LHC ?
- Extraction of the Compton Form Factor H from DVCS measurements at Jefferson Lab
- Exclusive photoproduction of lepton pairs at LHC