The photon PDF of the proton

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

doi:10.1140/epjc/s10052-014-3040-y

The photon PDF of the proton

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

Authors

A.D. Martin

M.G. Ryskin

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

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Copyright Statement
© The Author(s) 2014 Open Access This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited. Funded by SCOAP3 / License Version CC BY 4.0.