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Paper detail

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

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.

preprint2014arXivOpen access
HERAFitter developers' team:P. BelovD. BritzgerS. CamardaA. M. Cooper-SarkarC. DiaconuJ. FeltesseA. GizhkoA. GlazovV. KolesnikovK. LohwasserA. LuszczakV. MyronenkoH. PirumovR. PlacakyteK. RabbertzV. RadescuA. SapronovA. SchoeningS. ShushkevichW. SlominskiP. StarovoitovM. SuttonJ. TomaszewskaO. TurkotG. WattK. WichmannM. Lisovyi
hep-ph
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Open access29 authors1 topic
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HERAFitter developers' team:P. BelovD. BritzgerS. CamardaA. M. Cooper-SarkarC. DiaconuJ. FeltesseA. GizhkoA. GlazovV. KolesnikovK. LohwasserA. LuszczakV. MyronenkoH. PirumovR. PlacakyteK. RabbertzV. RadescuA. SapronovA. SchoeningS. ShushkevichW. SlominskiP. StarovoitovM. SuttonJ. TomaszewskaO. TurkotG. WattK. WichmannM. Lisovyi

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