Deuteron Uncertainties in the Determination of Proton PDFs

Richard D. Ball; Emanuele R. Nocera; Rosalyn L. Pearson

doi:10.1140/epjc/s10052-020-08826-7

Deuteron Uncertainties in the Determination of Proton PDFs

Richard D. Ball, Emanuele R. Nocera^*, Rosalyn L. Pearson

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Article number	37
Pages (from-to)	1-12
Number of pages	12
Journal	The European Physical Journal C
Volume	81
Issue number	1
DOIs	https://doi.org/10.1140/epjc/s10052-020-08826-7
Publication status	Published - 18 Jan 2021

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10.1140/epjc/s10052-020-08826-7Licence: Creative Commons: Attribution (CC-BY)

Particle Theory at the Higgs Centre
Ball, R. (Principal Investigator) & Zwicky, R. (Co-investigator)
STFC
1/10/20 → 30/09/24
Project: Research
Particle Theory at the Higgs Centre
Ball, R. (Principal Investigator), Boyle, P. (Co-investigator), Del Debbio, L. (Co-investigator), Gardi, E. (Co-investigator), Horsley, R. (Co-investigator), Kennedy, A. (Co-investigator), O'Connell, D. (Co-investigator), Smillie, J. (Co-investigator) & Zwicky, R. (Co-investigator)
STFC
1/10/17 → 30/09/21
Project: Research

Cite this

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title = "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, 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.",

author = "Ball, \{Richard D.\} and Nocera, \{Emanuele R.\} and Pearson, \{Rosalyn L.\}",

year = "2021",

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doi = "10.1140/epjc/s10052-020-08826-7",

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T1 - Deuteron Uncertainties in the Determination of Proton PDFs

AU - Ball, Richard D.

AU - Nocera, Emanuele R.

AU - Pearson, Rosalyn L.

PY - 2021/1/18

Y1 - 2021/1/18

N2 - 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.

AB - 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.

U2 - 10.1140/epjc/s10052-020-08826-7

DO - 10.1140/epjc/s10052-020-08826-7

M3 - Article

SN - 1434-6044

VL - 81

SP - 1

EP - 12

JO - The European Physical Journal C

JF - The European Physical Journal C

IS - 1

M1 - 37

ER -

Deuteron Uncertainties in the Determination of Proton PDFs

Abstract

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Particle Theory at the Higgs Centre

Particle Theory at the Higgs Centre

Cite this