Deuteron uncertainties in the determination of proton PDFs
Abstract We evaluate the uncertainties due to nuclear effects in global fits of proton parton distribution functions (PDFs) that utilise deep-inelastic scattering and Drell–Yan data on deuterium targets. To do this we use an iterative procedure to determine proton and deuteron PDFs simultaneously, e...
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SpringerOpen
2021-01-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-020-08826-7 |
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doaj-b3c3ee9629a24db595af80ccda68d4be2021-01-24T12:40:48ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522021-01-0181111210.1140/epjc/s10052-020-08826-7Deuteron uncertainties in the determination of proton PDFsRichard D. Ball0Emanuele R. Nocera1Rosalyn L. Pearson2The Higgs Centre for Theoretical Physics, University of EdinburghThe Higgs Centre for Theoretical Physics, University of EdinburghThe Higgs Centre for Theoretical Physics, University of EdinburghAbstract We evaluate the uncertainties due to nuclear effects in global fits of proton parton distribution functions (PDFs) that utilise deep-inelastic scattering and Drell–Yan data on deuterium targets. To do this we use an iterative procedure to determine proton and deuteron PDFs simultaneously, each including the uncertainties in the other. We apply this procedure to determine the nuclear uncertainties in the SLAC, BCDMS, NMC and DYE866/NuSea fixed target deuteron data included in the NNPDF3.1 global fit. We show that the effect of the nuclear uncertainty on the proton PDFs is small, and that the increase in overall uncertainties is insignificant once we correct for nuclear effects.https://doi.org/10.1140/epjc/s10052-020-08826-7 |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Richard D. Ball Emanuele R. Nocera Rosalyn L. Pearson |
| spellingShingle |
Richard D. Ball Emanuele R. Nocera Rosalyn L. Pearson Deuteron uncertainties in the determination of proton PDFs European Physical Journal C: Particles and Fields |
| author_facet |
Richard D. Ball Emanuele R. Nocera Rosalyn L. Pearson |
| author_sort |
Richard D. Ball |
| title |
Deuteron uncertainties in the determination of proton PDFs |
| title_short |
Deuteron uncertainties in the determination of proton PDFs |
| title_full |
Deuteron uncertainties in the determination of proton PDFs |
| title_fullStr |
Deuteron uncertainties in the determination of proton PDFs |
| title_full_unstemmed |
Deuteron uncertainties in the determination of proton PDFs |
| title_sort |
deuteron uncertainties in the determination of proton pdfs |
| publisher |
SpringerOpen |
| series |
European Physical Journal C: Particles and Fields |
| issn |
1434-6044 1434-6052 |
| publishDate |
2021-01-01 |
| description |
Abstract We evaluate the uncertainties due to nuclear effects in global fits of proton parton distribution functions (PDFs) that utilise deep-inelastic scattering and Drell–Yan data on deuterium targets. To do this we use an iterative procedure to determine proton and deuteron PDFs simultaneously, each including the uncertainties in the other. We apply this procedure to determine the nuclear uncertainties in the SLAC, BCDMS, NMC and DYE866/NuSea fixed target deuteron data included in the NNPDF3.1 global fit. We show that the effect of the nuclear uncertainty on the proton PDFs is small, and that the increase in overall uncertainties is insignificant once we correct for nuclear effects. |
| url |
https://doi.org/10.1140/epjc/s10052-020-08826-7 |
| work_keys_str_mv |
AT richarddball deuteronuncertaintiesinthedeterminationofprotonpdfs AT emanuelernocera deuteronuncertaintiesinthedeterminationofprotonpdfs AT rosalynlpearson deuteronuncertaintiesinthedeterminationofprotonpdfs |
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