A first unbiased global determination of polarized PDFs and their uncertainties

NNPDF Collaboration

doi:10.1016/j.nuclphysb.2014.08.008

A first unbiased global determination of polarized PDFs and their uncertainties

NNPDF Collaboration

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English
Pages (from-to)	276–308
Number of pages	33
Journal	Nuclear physics b
Volume	887
Early online date	22 Aug 2014
DOIs	https://doi.org/10.1016/j.nuclphysb.2014.08.008
Publication status	Published - 1 Oct 2014

Keywords / Materials (for Non-textual outputs)

hep-ph
hep-ex

Access to Document

10.1016/j.nuclphysb.2014.08.008Licence: Creative Commons: Attribution (CC-BY)

pdf

Particle Theory at the Tait Institute
Ball, R., Berera, A., Boyle, P., Del Debbio, L., Figueroa-O'Farrill, J., Gardi, E., Horsley, R., Kennedy, A., Kenway, R., Pendleton, B. & Simon Soler, J.
STFC
1/10/11 → 30/09/15
Project: Research

Richard Ball
- r.d.balled.acuk
- School of Physics and Astronomy - Personal Chair
Person: Academic: Research Active

Cite this

@article{4bfdfd09407d46bdbfdc9e0473dec983,

title = "A first unbiased global determination of polarized PDFs and their uncertainties",

abstract = "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.",

keywords = "hep-ph, hep-ex",

author = "{NNPDF Collaboration} and {R. Nocera}, Emanuele and {D. Ball}, Richard and Stefano Forte and Giovanni Ridolfi and Juan Rojo",

note = "36 pages, 16 figures",

year = "2014",

month = oct,

day = "1",

doi = "10.1016/j.nuclphysb.2014.08.008",

language = "English",

volume = "887",

pages = "276–308",

journal = "Nuclear physics b",

issn = "0550-3213",

publisher = "Elsevier",

}

TY - JOUR

T1 - A first unbiased global determination of polarized PDFs and their uncertainties

AU - NNPDF Collaboration

AU - R. Nocera, Emanuele

AU - D. Ball, Richard

AU - Forte, Stefano

AU - Ridolfi, Giovanni

AU - Rojo, Juan

N1 - 36 pages, 16 figures

PY - 2014/10/1

Y1 - 2014/10/1

N2 - 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.

AB - 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.

KW - hep-ph

KW - hep-ex

U2 - 10.1016/j.nuclphysb.2014.08.008

DO - 10.1016/j.nuclphysb.2014.08.008

M3 - Article

SN - 0550-3213

VL - 887

SP - 276

EP - 308

JO - Nuclear physics b

JF - Nuclear physics b

ER -

A first unbiased global determination of polarized PDFs and their uncertainties

Abstract

Keywords / Materials (for Non-textual outputs)

Access to Document

Fingerprint

Projects

Particle Theory at the Tait Institute

Profiles

Richard Ball

Cite this