A first unbiased global determination of polarized PDFs and their uncertainties

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...

Descripción completa

Detalles Bibliográficos
Autores principales: Nocera, Emanuele R., Ball, Richard D., Forte, Stefano, Ridolfi, Giovanni, Rojo, Juan
Lenguaje:eng
Publicado: 2014
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/j.nuclphysb.2014.08.008
http://cds.cern.ch/record/1711464
_version_ 1780936733248978944
author Nocera, Emanuele R.
Ball, Richard D.
Forte, Stefano
Ridolfi, Giovanni
Rojo, Juan
author_facet Nocera, Emanuele R.
Ball, Richard D.
Forte, Stefano
Ridolfi, Giovanni
Rojo, Juan
author_sort Nocera, Emanuele R.
collection CERN
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 anti-quark 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.
id cern-1711464
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2014
record_format invenio
spelling cern-17114642023-02-04T05:49:23Zdoi:10.1016/j.nuclphysb.2014.08.008http://cds.cern.ch/record/1711464engNocera, Emanuele R.Ball, Richard D.Forte, StefanoRidolfi, GiovanniRojo, JuanA first unbiased global determination of polarized PDFs and their uncertaintiesParticle Physics - PhenomenologyWe 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 anti-quark 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.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 anti-quark 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.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.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 anti-quark 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.arXiv:1406.5539CERN-PH-TH-2014-106IFUN-1028-FTEDINBURGH-14-11OUTP-14-06PCERN-PH-TH-2014-106IFUN-1028-FTEDINBURGH-14-11OUTP-14-06Poai:cds.cern.ch:17114642014-06-20
spellingShingle Particle Physics - Phenomenology
Nocera, Emanuele R.
Ball, Richard D.
Forte, Stefano
Ridolfi, Giovanni
Rojo, Juan
A first unbiased global determination of polarized PDFs and their uncertainties
title A first unbiased global determination of polarized PDFs and their uncertainties
title_full A first unbiased global determination of polarized PDFs and their uncertainties
title_fullStr A first unbiased global determination of polarized PDFs and their uncertainties
title_full_unstemmed A first unbiased global determination of polarized PDFs and their uncertainties
title_short A first unbiased global determination of polarized PDFs and their uncertainties
title_sort first unbiased global determination of polarized pdfs and their uncertainties
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/j.nuclphysb.2014.08.008
http://cds.cern.ch/record/1711464
work_keys_str_mv AT noceraemanueler afirstunbiasedglobaldeterminationofpolarizedpdfsandtheiruncertainties
AT ballrichardd afirstunbiasedglobaldeterminationofpolarizedpdfsandtheiruncertainties
AT fortestefano afirstunbiasedglobaldeterminationofpolarizedpdfsandtheiruncertainties
AT ridolfigiovanni afirstunbiasedglobaldeterminationofpolarizedpdfsandtheiruncertainties
AT rojojuan afirstunbiasedglobaldeterminationofpolarizedpdfsandtheiruncertainties
AT noceraemanueler firstunbiasedglobaldeterminationofpolarizedpdfsandtheiruncertainties
AT ballrichardd firstunbiasedglobaldeterminationofpolarizedpdfsandtheiruncertainties
AT fortestefano firstunbiasedglobaldeterminationofpolarizedpdfsandtheiruncertainties
AT ridolfigiovanni firstunbiasedglobaldeterminationofpolarizedpdfsandtheiruncertainties
AT rojojuan firstunbiasedglobaldeterminationofpolarizedpdfsandtheiruncertainties

Ejemplares similares