Published October 2014 | Version v1
Journal article Metadata-only

A first unbiased global determination of polarized PDFs and their uncertainties

Creators

  • 1. Dipartimento di Fisica, Università di Milano and INFN, Sezione di Milano, Via Celoria 16, I-20133 Milano (Italy)
  • 2. Higgs Centre, University of Edinburgh, JCMB, KB, Mayfield Rd, Edinburgh EH9 3JZ, Scotland (United Kingdom)
  • 3. Dipartimento di Fisica, Università di Genova and INFN, Sezione di Genova, Genova (Italy)
  • 4. Rudolf Peierls Centre for Theoretical Physics, 1 Keble Road, University of Oxford, OX1 3NP Oxford (United Kingdom)
  • 5. PH Department, TH Unit, CERN, CH-1211 Geneva 23 (Switzerland)

Description

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

Availability note (English)

Available from http://dx.doi.org/10.1016/j.nuclphysb.2014.08.008

Additional details

Identifiers

DOI
10.1016/j.nuclphysb.2014.08.008;
arXiv
arXiv:1406.5539v2;
PII
S0550-3213(14)00263-6;

Publishing Information

Journal Title
Nuclear Physics. B
Journal Volume
887
Journal Page Range
p. 276-308
ISSN
0550-3213
CODEN
NUPBBO

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
46129404
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
BROOKHAVEN RHIC; DEEP INELASTIC SCATTERING; DISTRIBUTION FUNCTIONS; GLUONS; HADRONS; PARTICLE PRODUCTION; QUARKS; SPIN; SPS COMPASS DETECTOR; W MINUS BOSONS; W PLUS BOSONS
Descriptors DEC
ACCELERATORS; ANGULAR MOMENTUM; BOSONS; ELEMENTARY PARTICLES; FERMIONS; FUNCTIONS; HEAVY ION ACCELERATORS; INELASTIC SCATTERING; INTERACTIONS; INTERMEDIATE BOSONS; INTERMEDIATE VECTOR BOSONS; LEPTON-BARYON INTERACTIONS; LEPTON-HADRON INTERACTIONS; LEPTON-NUCLEON INTERACTIONS; MEASURING INSTRUMENTS; PARTICLE INTERACTIONS; PARTICLE PROPERTIES; RADIATION DETECTORS; SCATTERING; STORAGE RINGS

Optional Information

Copyright
Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.