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@ARTICLE{Braun:617343,
      author       = {Braun, Vladimir and Jiang, Hua-Yu and Manashov, Alexander
                      and von Manteuffel, Andreas},
      title        = {{T}he two-loop coefficient function for double deeply
                      virtual {C}ompton scattering},
      reportid     = {PUBDB-2024-06709, DESY-24-178. arXiv:2411.14985},
      year         = {2024},
      abstract     = {Making use of conformal symmetry of large-n f QCD in d = 4
                      − 2ϵ dimensions atthe Wilson-Fischer fixed point, we
                      calculate the two-loop coefficient function in the
                      operatorproduct expansion of two electromagnetic currents in
                      a general kinematics with two differentphoton virtualities.
                      This result is necessary for the description of the double
                      deeply virtualCompton scattering to the
                      next-to-next-to-leading order accuracy, but is also
                      interesting fora range of other two-photon processes. We
                      present analytic expression for the coefficientfunction in
                      momentum fraction space in the MS scheme and study its
                      numerical impacton the Compton form factors for a simple
                      model of the generalized parton distribution. Thecalculated
                      corrections turn out to be large and are significant in the
                      kinematics of the proposedexperiments.},
      cin          = {UNI/TH},
      ddc          = {530},
      cid          = {$I:(DE-H253)UNI_TH-20120731$},
      pnm          = {611 - Fundamental Particles and Forces (POF4-611) / DFG
                      project G:(GEPRIS)430824754 - Neue Zugänge zu
                      semi-inklusiven Streuprozessen am Electron-Ion-Collider
                      (EIC) (430824754) / DFG project G:(GEPRIS)409651613 - FOR
                      2926: Next Generation Perturbative QCD for Hadron Structure:
                      Preparing for the Electron-Ion Collider (409651613)},
      pid          = {G:(DE-HGF)POF4-611 / G:(GEPRIS)430824754 /
                      G:(GEPRIS)409651613},
      experiment   = {EXP:(DE-H253)D-G3-20150101},
      typ          = {PUB:(DE-HGF)25},
      eprint       = {2411.14985},
      howpublished = {arXiv:2411.14985},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:2411.14985;\%\%$},
      doi          = {10.3204/PUBDB-2024-06709},
      url          = {https://bib-pubdb1.desy.de/record/617343},
}