Polarized Parton Distributions at an Electron-Ion Collider

We study the potential impact of inclusive deep-inelastic scattering data from a future electron-ion collider (EIC) on longitudinally polarized parton distribution (PDFs). We perform a PDF determination using the NNPDF methodology, based on sets of deep-inelastic EIC pseudodata, for different realis...

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Detalles Bibliográficos
Autores principales: Ball, Richard D., Forte, Stefano, Guffanti, Alberto, Nocera, Emanuele R., Ridolfi, Giovanni, Rojo, Juan
Lenguaje:eng
Publicado: 2013
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/j.physletb.2013.12.023
http://cds.cern.ch/record/1605357
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author Ball, Richard D.
Forte, Stefano
Guffanti, Alberto
Nocera, Emanuele R.
Ridolfi, Giovanni
Rojo, Juan
author_facet Ball, Richard D.
Forte, Stefano
Guffanti, Alberto
Nocera, Emanuele R.
Ridolfi, Giovanni
Rojo, Juan
author_sort Ball, Richard D.
collection CERN
description We study the potential impact of inclusive deep-inelastic scattering data from a future electron-ion collider (EIC) on longitudinally polarized parton distribution (PDFs). We perform a PDF determination using the NNPDF methodology, based on sets of deep-inelastic EIC pseudodata, for different realistic choices of the electron and proton beam energies. We compare the results to our current polarized PDF set, NNPDFpol1.0, based on a fit to fixed-target inclusive DIS data. We show that the uncertainties on the first moments of the polarized quark singlet and gluon distributions are substantially reduced in comparison to NNPDFpol1.0, but also that more measurements may be needed to ultimately pin down the size of the gluon contribution to the nucleon spin.
id cern-1605357
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2013
record_format invenio
spelling cern-16053572022-08-13T02:25:13Zdoi:10.1016/j.physletb.2013.12.023http://cds.cern.ch/record/1605357engBall, Richard D.Forte, StefanoGuffanti, AlbertoNocera, Emanuele R.Ridolfi, GiovanniRojo, JuanPolarized Parton Distributions at an Electron-Ion ColliderParticle Physics - PhenomenologyWe study the potential impact of inclusive deep-inelastic scattering data from a future electron-ion collider (EIC) on longitudinally polarized parton distribution (PDFs). We perform a PDF determination using the NNPDF methodology, based on sets of deep-inelastic EIC pseudodata, for different realistic choices of the electron and proton beam energies. We compare the results to our current polarized PDF set, NNPDFpol1.0, based on a fit to fixed-target inclusive DIS data. We show that the uncertainties on the first moments of the polarized quark singlet and gluon distributions are substantially reduced in comparison to NNPDFpol1.0, but also that more measurements may be needed to ultimately pin down the size of the gluon contribution to the nucleon spin.We study the potential impact of inclusive deep-inelastic scattering data from a future electron–ion collider (EIC) on longitudinally polarized parton distributions (PDFs). We perform a PDF determination using the NNPDF methodology, based on sets of deep-inelastic EIC pseudodata, for different realistic choices of the electron and proton beam energies. We compare the results to our current polarized PDF set, NNPDFpol1.0 , based on a fit to fixed-target inclusive DIS data. We show that the uncertainties on the first moments of the polarized quark singlet and gluon distributions are substantially reduced in comparison to NNPDFpol1.0 , but also that more measurements may be needed to ultimately pin down the size of the gluon contribution to the nucleon spin.We study the potential impact of inclusive deep-inelastic scattering data from a future electron-ion collider (EIC) on longitudinally polarized parton distribution (PDFs). We perform a PDF determination using the NNPDF methodology, based on sets of deep-inelastic EIC pseudodata, for different realistic choices of the electron and proton beam energies. We compare the results to our current polarized PDF set, NNPDFpol1.0, based on a fit to fixed-target inclusive DIS data. We show that the uncertainties on the first moments of the polarized quark singlet and gluon distributions are substantially reduced in comparison to NNPDFpol1.0, but also that more measurements may be needed to ultimately pin down the size of the gluon contribution to the nucleon spin.arXiv:1310.0461CERN-PH-TH-2013-210EDINBURGH-2013-26IFUM-1016-FTCERN-PH-TH-2013-210EDINBURGH 2013-26IFUM-1016-FToai:cds.cern.ch:16053572013-10-01
spellingShingle Particle Physics - Phenomenology
Ball, Richard D.
Forte, Stefano
Guffanti, Alberto
Nocera, Emanuele R.
Ridolfi, Giovanni
Rojo, Juan
Polarized Parton Distributions at an Electron-Ion Collider
title Polarized Parton Distributions at an Electron-Ion Collider
title_full Polarized Parton Distributions at an Electron-Ion Collider
title_fullStr Polarized Parton Distributions at an Electron-Ion Collider
title_full_unstemmed Polarized Parton Distributions at an Electron-Ion Collider
title_short Polarized Parton Distributions at an Electron-Ion Collider
title_sort polarized parton distributions at an electron-ion collider
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/j.physletb.2013.12.023
http://cds.cern.ch/record/1605357
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AT fortestefano polarizedpartondistributionsatanelectronioncollider
AT guffantialberto polarizedpartondistributionsatanelectronioncollider
AT noceraemanueler polarizedpartondistributionsatanelectronioncollider
AT ridolfigiovanni polarizedpartondistributionsatanelectronioncollider
AT rojojuan polarizedpartondistributionsatanelectronioncollider

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