Deeply virtual Compton scattering beyond next-to-leading order: the flavor singlet case

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dc.creatorKumericki, K.
dc.creatorMüller, D.
dc.creatorPassek-Kumericki, K.
dc.creatorSchäfer, A.
dc.date2006-05-22
dc.date.accessioned2026-07-07T10:41:37Z
dc.date.available2026-07-07T10:41:37Z
dc.descriptionWe study radiative corrections to deeply virtual Compton scattering in the kinematics of HERA collider experiments to next--to--leading and next--to--next--to--leading order. In the latter case the radiative corrections are evaluated in a special scheme that allows us to employ the predictive power of conformal symmetry. As observed before, the size of next--to--leading order corrections strongly depends on the gluonic input, as gluons start to contribute at this order. Beyond next--to--leading order we find, in contrast, that the corrections for an input scale of few GeV^2 are small enough to justify the uses of perturbation theory. For $ξ> 5 10^{-3}$ the modification of the scale dependence is also small. However, with decreasing $ξ$ it becomes moderate or even large, in particular for the phase.
dc.description17 pages, 2 figures
dc.identifierhttps://arxiv.org/abs/hep-ph/0605237
dc.identifierhttp://arxiv.org/abs/hep-ph/0605237
dc.identifierPhys.Lett.B648:186-194,2007
dc.identifierdoi:10.1016/j.physletb.2007.02.071
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/181677
dc.subjectHigh Energy Physics - Phenomenology
dc.titleDeeply virtual Compton scattering beyond next-to-leading order: the flavor singlet case
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