Parton distributions with QED corrections

The NNPDF Collaboration; Richard D. Ball; Valerio Bertone; Stefano Carrazza; Luigi Del Debbio; Stefano Forte; Alberto Guffanti; Nathan P. Hartland; Juan Rojo

doi:10.1016/j.nuclphysb.2013.10.010

Parton distributions with QED corrections

The NNPDF Collaboration, Richard D. Ball, Valerio Bertone, Stefano Carrazza, Luigi Del Debbio, Stefano Forte, Alberto Guffanti, Nathan P. Hartland, Juan Rojo

(Astro)-Particles Physics

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Abstract

We present a set of parton distribution functions (PDFs), based on the NNPDF2.3 set, which includes a photon PDF, and QED contributions to parton evolution. We describe the implementation of the combined QCD+QED evolution in the NNPDF framework. We then provide a first determination of the full set of PDFs based on deep-inelastic scattering data and LHC data for W and Z/gamma* Drell-Yan production, using leading-order QED and NLO or NNLO QCD. We compare the ensuing NNPDF2.3QED PDF set to the older MRST2004QED set. We perform a preliminary investigation of the phenomenological implications of NNPDF2.3QED: specifically, photon-induced corrections to direct photon production at HERA, and high-mass dilepton and W pair production at the LHC.

Original language	English
Pages (from-to)	290-320
Journal	Nuclear Physics B
Volume	877
Issue number	2
DOIs	https://doi.org/10.1016/j.nuclphysb.2013.10.010
Publication status	Published - 2 Aug 2013

Bibliographical note

38 pages, 27 figures. Final version, to be published in Nucl. Phys. B. Several corrections and improvements, in particular Fig.5 added, Fig.2, Fig. 6 and Fig.8 improved, Fig.21 corrected

Keywords

hep-ph

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title = "Parton distributions with QED corrections",

abstract = "We present a set of parton distribution functions (PDFs), based on the NNPDF2.3 set, which includes a photon PDF, and QED contributions to parton evolution. We describe the implementation of the combined QCD+QED evolution in the NNPDF framework. We then provide a first determination of the full set of PDFs based on deep-inelastic scattering data and LHC data for W and Z/gamma* Drell-Yan production, using leading-order QED and NLO or NNLO QCD. We compare the ensuing NNPDF2.3QED PDF set to the older MRST2004QED set. We perform a preliminary investigation of the phenomenological implications of NNPDF2.3QED: specifically, photon-induced corrections to direct photon production at HERA, and high-mass dilepton and W pair production at the LHC.",

keywords = "hep-ph",

author = "Collaboration, {The NNPDF} and Ball, {Richard D.} and Valerio Bertone and Stefano Carrazza and Debbio, {Luigi Del} and Stefano Forte and Alberto Guffanti and Hartland, {Nathan P.} and Juan Rojo",

note = "38 pages, 27 figures. Final version, to be published in Nucl. Phys. B. Several corrections and improvements, in particular Fig.5 added, Fig.2, Fig. 6 and Fig.8 improved, Fig.21 corrected",

year = "2013",

month = aug,

day = "2",

doi = "10.1016/j.nuclphysb.2013.10.010",

language = "English",

volume = "877",

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journal = "Nuclear Physics B",

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TY - JOUR

T1 - Parton distributions with QED corrections

AU - Collaboration, The NNPDF

AU - Ball, Richard D.

AU - Bertone, Valerio

AU - Carrazza, Stefano

AU - Debbio, Luigi Del

AU - Forte, Stefano

AU - Guffanti, Alberto

AU - Hartland, Nathan P.

AU - Rojo, Juan

N1 - 38 pages, 27 figures. Final version, to be published in Nucl. Phys. B. Several corrections and improvements, in particular Fig.5 added, Fig.2, Fig. 6 and Fig.8 improved, Fig.21 corrected

PY - 2013/8/2

Y1 - 2013/8/2

N2 - We present a set of parton distribution functions (PDFs), based on the NNPDF2.3 set, which includes a photon PDF, and QED contributions to parton evolution. We describe the implementation of the combined QCD+QED evolution in the NNPDF framework. We then provide a first determination of the full set of PDFs based on deep-inelastic scattering data and LHC data for W and Z/gamma* Drell-Yan production, using leading-order QED and NLO or NNLO QCD. We compare the ensuing NNPDF2.3QED PDF set to the older MRST2004QED set. We perform a preliminary investigation of the phenomenological implications of NNPDF2.3QED: specifically, photon-induced corrections to direct photon production at HERA, and high-mass dilepton and W pair production at the LHC.

AB - We present a set of parton distribution functions (PDFs), based on the NNPDF2.3 set, which includes a photon PDF, and QED contributions to parton evolution. We describe the implementation of the combined QCD+QED evolution in the NNPDF framework. We then provide a first determination of the full set of PDFs based on deep-inelastic scattering data and LHC data for W and Z/gamma* Drell-Yan production, using leading-order QED and NLO or NNLO QCD. We compare the ensuing NNPDF2.3QED PDF set to the older MRST2004QED set. We perform a preliminary investigation of the phenomenological implications of NNPDF2.3QED: specifically, photon-induced corrections to direct photon production at HERA, and high-mass dilepton and W pair production at the LHC.

KW - hep-ph

U2 - 10.1016/j.nuclphysb.2013.10.010

DO - 10.1016/j.nuclphysb.2013.10.010

M3 - Article

VL - 877

SP - 290

EP - 320

JO - Nuclear Physics B

JF - Nuclear Physics B

SN - 0550-3213

IS - 2

ER -