Absorptive effects and power corrections in low x DGLAP evolution

Pelicer, M.R.; de Oliveira, E.G.; Martin, A.D.; Ryskin, M.G.

Abstract

We address a long standing problem concerning the scale behaviour of parton densities in the low x, low Q2 domain. We emphasize the important role of absorptive corrections at low x and use knowledge of diffractive deep inelastic scattering to exclude the absorptive effect from conventional deep inelastic data. In this way we obtain a significantly different low x behaviour of the gluon density, which is now much better described by linear DGLAP evolution. Accounting also for a second power correction, which arises from the freezing of αs at low Q2 , leads to an essentially flat behaviour of the low x gluon density.

Citation

Pelicer, M., de Oliveira, E., Martin, A., & Ryskin, M. (2019). Absorptive effects and power corrections in low x DGLAP evolution. The European Physical Journal C, 79(1), Article 9. https://doi.org/10.1140/epjc/s10052-018-6515-4

• Journal Article Type: Article
• Acceptance Date: Dec 12, 2018
• Online Publication Date: Jan 7, 2019
• Publication Date: Jan 7, 2019
• Deposit Date: Jan 16, 2019
• Publicly Available Date: Jan 16, 2019
• Journal: European Physical Journal C: Particles and Fields
• Print ISSN: 1434-6044
• Electronic ISSN: 1434-6052
• Publisher: SpringerOpen
• Peer Reviewed: Peer Reviewed
• Volume: 79
• Issue: 1
• Article Number: 9
• DOI: https://doi.org/10.1140/epjc/s10052-018-6515-4
• Public URL: https://durham-repository.worktribe.com/output/1309818