The photon PDF of the proton

Martin, A.D.; Ryskin, M.G.

Abstract

We show how the photon input parton distribution function (PDF) may be calculated with good accuracy and used in an extended DGLAP global parton analysis in which the photon is treated as an additional point-like parton. The uncertainty of the input photon PDF is relatively small, since the major part of the distribution (which is produced by the coherent emission of the photon from a proton that remains intact) is well known. We present the expected photon PDFs and compare the predictions with ZEUS data for isolated photon electroproduction at negative rapidities.

Citation

Martin, A., & Ryskin, M. (2014). The photon PDF of the proton. The European Physical Journal C, 74(9), Article 3040. https://doi.org/10.1140/epjc/s10052-014-3040-y

• Journal Article Type: Article
• Acceptance Date: Aug 22, 2014
• Online Publication Date: Sep 4, 2014
• Publication Date: Sep 4, 2014
• Deposit Date: May 25, 2017
• Publicly Available Date: May 31, 2017
• Journal: European Physical Journal C: Particles and Fields
• Print ISSN: 1434-6044
• Electronic ISSN: 1434-6052
• Publisher: SpringerOpen
• Peer Reviewed: Peer Reviewed
• Volume: 74
• Issue: 9
• Article Number: 3040
• DOI: https://doi.org/10.1140/epjc/s10052-014-3040-y
• Public URL: https://durham-repository.worktribe.com/output/1357660