Parton distributions in the LHC era: MMHT 2014 PDFs

Harland-Lang, L.A.; Martin, A.D.; Motylinski, P.; Thorne, R.S.

doi:10.1140/epjc/s10052-015-3397-6

Parton distributions in the LHC era: MMHT 2014 PDFs

Harland-Lang, L.A.; Martin, A.D.; Motylinski, P.; Thorne, R.S.

Authors

L.A. Harland-Lang

A.D. Martin

P. Motylinski

R.S. Thorne

Abstract

We present LO, NLO and NNLO sets of parton distribution functions (PDFs) of the proton determined from global analyses of the available hard scattering data. These MMHT2014 PDFs supersede the ‘MSTW2008’ parton sets, but they are obtained within the same basic framework. We include a variety of new data sets, from the LHC, updated Tevatron data and the HERA combined H1 and ZEUS data on the total and charm structure functions. We also improve the theoretical framework of the previous analysis. These new PDFs are compared to the ‘MSTW2008’ parton sets. In most cases the PDFs, and the predictions, are within one standard deviation of those of MSTW2008. The major changes are the u−du−d valence quark difference at small xx due to an improved parameterisation and, to a lesser extent, the strange quark PDF due to the effect of certain LHC data and a better treatment of the D→μD→μ branching ratio. We compare our MMHT PDF sets with those of other collaborations; in particular with the NNPDF3.0 sets, which are contemporary with the present analysis.

Citation

Harland-Lang, L., Martin, A., Motylinski, P., & Thorne, R. (2015). Parton distributions in the LHC era: MMHT 2014 PDFs. The European Physical Journal C, 75(5), Article 204. https://doi.org/10.1140/epjc/s10052-015-3397-6

Journal Article Type	Article
Acceptance Date	Apr 8, 2015
Online Publication Date	May 9, 2015
Publication Date	May 9, 2015
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	75
Issue	5
Article Number	204
DOI	https://doi.org/10.1140/epjc/s10052-015-3397-6

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© The Author(s) 2015 Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Funded by SCOAP3 / License Version CC BY 4.0