Journal
NUCLEAR PHYSICS B
Volume 887, Issue -, Pages 276-308Publisher
ELSEVIER
DOI: 10.1016/j.nuclphysb.2014.08.008
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Funding
- Italian Ministry of Education, Research and Universities(PRIN)
- UK STFC [ST/J000329/1]
- European Investment Bank EIBURS
- European Commission through the HiggsTools Initial Training Network [PITN-GA-21012-316704]
- STFC [ST/K005227/1, ST/J000329/1, ST/L000458/1, ST/G000522/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/L000458/1, ST/K005227/1, ST/J000329/1, ST/G000522/1] Funding Source: researchfish
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We present a first global determination of spin-dependent parton distribution functions (PDFs) and their uncertainties using the NNPDF methodology: NNPDFpol1.1. Longitudinally polarized deep-inelastic scattering data, already used for the previous NNPDFpol1.0 PDF set, are supplemented with the most recent polarized hadron collider data for inclusive jet and W boson production from the STAR and PHENIX experiments at RHIC, and with open-charm production data from the COMPASS experiment, thereby allowing for a separate determination of the polarized quark and antiquark PDFs, and an improved determination of the medium- and large-x polarized gluon PDF. We study the phenomenological implications of the NNPDFpol1. 1 set, and we provide predictions for the longitudinal double-spin asymmetry for semi-inclusive pion production at RHIC. (C) 2014 CERN for the benefit of the NNPDF Collaboration. Published by Elsevier B.V.
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