Parton distribution functions at LO, NLO and NNLO with correlated uncertainties between orders
High Energy Physics - Phenomenology
2014-04-18 v2
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 di-boson to boson production cross sections at the LHC.
Keywords
Cite
@article{arxiv.1404.4234,
title = {Parton distribution functions at LO, NLO and NNLO with correlated uncertainties between orders},
author = {HERAFitter developers' team and : and P. Belov and D. Britzger and S. Camarda and A. M. Cooper-Sarkar and C. Diaconu and J. Feltesse and A. Gizhko and A. Glazov and V. Kolesnikov and K. Lohwasser and A. Luszczak and V. Myronenko and H. Pirumov and R. Placakyte and K. Rabbertz and V. Radescu and A. Sapronov and A. Schoening and S. Shushkevich and W. Slominski and P. Starovoitov and M. Sutton and J. Tomaszewska and O. Turkot and G. Watt and K. Wichmann and M. Lisovyi},
journal= {arXiv preprint arXiv:1404.4234},
year = {2014}
}
Comments
10 pages, 5 figures