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

Research output: Contribution to JournalArticleAcademicpeer-review

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 languageEnglish
Pages (from-to)290-320
JournalNuclear Physics B
Volume877
Issue number2
DOIs
Publication statusPublished - 2 Aug 2013

Fingerprint

partons
distribution functions
photons
quantum chromodynamics
pair production
inelastic scattering

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

Cite this

Collaboration, T. NNPDF., Ball, R. D., Bertone, V., Carrazza, S., Debbio, L. D., Forte, S., ... Rojo, J. (2013). Parton distributions with QED corrections. Nuclear Physics B, 877(2), 290-320. https://doi.org/10.1016/j.nuclphysb.2013.10.010
Collaboration, The NNPDF ; Ball, Richard D. ; Bertone, Valerio ; Carrazza, Stefano ; Debbio, Luigi Del ; Forte, Stefano ; Guffanti, Alberto ; Hartland, Nathan P. ; Rojo, Juan. / Parton distributions with QED corrections. In: Nuclear Physics B. 2013 ; Vol. 877, No. 2. pp. 290-320.
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Collaboration, TNNPDF, Ball, RD, Bertone, V, Carrazza, S, Debbio, LD, Forte, S, Guffanti, A, Hartland, NP & Rojo, J 2013, 'Parton distributions with QED corrections' Nuclear Physics B, vol. 877, no. 2, pp. 290-320. https://doi.org/10.1016/j.nuclphysb.2013.10.010

Parton distributions with QED corrections. / Collaboration, The NNPDF; Ball, Richard D.; Bertone, Valerio; Carrazza, Stefano; Debbio, Luigi Del; Forte, Stefano; Guffanti, Alberto; Hartland, Nathan P.; Rojo, Juan.

In: Nuclear Physics B, Vol. 877, No. 2, 02.08.2013, p. 290-320.

Research output: Contribution to JournalArticleAcademicpeer-review

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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

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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.

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Collaboration TNNPDF, Ball RD, Bertone V, Carrazza S, Debbio LD, Forte S et al. Parton distributions with QED corrections. Nuclear Physics B. 2013 Aug 2;877(2):290-320. https://doi.org/10.1016/j.nuclphysb.2013.10.010