Parton distributions with QED corrections

TY - JOUR

T1 - Parton distributions with QED corrections

AU - Ball, R.D.

AU - Valerio, B.

AU - Carrazza, S.

AU - Del Debbio, L.

AU - Forte, S.

AU - Guffanti, Alberto

AU - Hartland, N.P.

AU - Rojo, J.

PY - 2013/12/11

Y1 - 2013/12/11

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/γ* 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/γ* 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.

U2 - 10.1016/j.nuclphysb.2013.10.010

DO - 10.1016/j.nuclphysb.2013.10.010

M3 - Journal article

SN - 0550-3213

VL - 877

SP - 290

EP - 320

JO - Nuclear Physics, Section B

JF - Nuclear Physics, Section B

IS - 2

ER -