Parton distribution functions at LO, NLO and NNLO with correlated uncertainties between orders

Belov, P.; Britzger, D.; Camarda, S.; Cooper-Sarkar, A.M.; Diaconu, C.; Feltesse, J.; Gizhko, A.; Glazov, A.; Kolesnikov, V.; Lohwasser, K.; Luszczak, A.; Myronenko, V.; Pirumov, H.; Plačakytė, R.; Rabbertz, K.; Radescu, V.; Sapronov, A.; Schöning, A.; Shushkevich, S.; Slominski, W.; Starovoitov, P.; Sutton, M.; Tomaszewska, J.; Turkot, O.; Watt, G.; Wichmann, K.; Lisovyi, M.

Abstract

Sets of parton distribution functions (PDFs) of the proton are reported for the leading (LO), next-to-leading (NLO) and next-to-next-to-leading-order (NNLO) QCD calculations. The parton distribution functions are determined with the HERAFitter program using the data from the HERA experiments and preserving correlations between uncertainties for the LO, NLO and NNLO PDF sets. The sets are used to study cross-section ratios and their uncertainties when calculated at different orders in QCD. A reduction of the overall theoretical uncertainty is observed if correlations between the PDF sets are taken into account for the ratio of WW di-boson to Z boson production cross sections at the LHC.

Citation

Belov, P., Britzger, D., Camarda, S., Cooper-Sarkar, A., Diaconu, C., Feltesse, J., …Lisovyi, M. (2014). Parton distribution functions at LO, NLO and NNLO with correlated uncertainties between orders. The European Physical Journal C, 74(10), Article 3039. https://doi.org/10.1140/epjc/s10052-014-3039-4

• Journal Article Type: Article
• Acceptance Date: Aug 22, 2014
• Online Publication Date: Sep 30, 2014
• Publication Date: Sep 30, 2014
• Deposit Date: Apr 18, 2019
• Publicly Available Date: Apr 18, 2019
• 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: 10
• Article Number: 3039
• DOI: https://doi.org/10.1140/epjc/s10052-014-3039-4
• Public URL: https://durham-repository.worktribe.com/output/1332726