Preprint/Report

PUBDB-2017-12339

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Parton distributions and lattice QCD calculations: a community white paper

Lin, H.-W. ; Nocera, E. R. (Corresponding author) ; Olness, F. ; Orginos, K. ; Rojo, J. ; Accardi, A. ; Alexandrou, C. ; Bacchetta, A. ; Bozzi, G. ; Chen, J.-W. ; Collins, S. ; Cooper-Sarkar, A. ; Constantinou, M. ; Del Debbio, L. ; Engelhardt, M. ; Green, J.DESY* ; Gupta, R. ; Harland-Lang, L. A. ; Ishikawa, T. ; Kusina, A. ; Liu, K.-F. ; Liuti, S. ; Monahan, C. ; Nadolsky, P. ; Qiu, J.-W. ; Schienbein, I. ; Schierholz, G.DESY* ; Thorne, R. S. ; Vogelsang, W. ; Wittig, H. ; Yuan, C.-P. ; Zanotti, J.

2017

This record in other databases:    

Please use a persistent id in citations: doi:10.3204/PUBDB-2017-12339

Report No.: DESY-17-185; IFJPAN-IV-2017-19; INT-PUB-17-042; MSUHEP-17-017; NIKHEF-2017-047; OUTP-17-15P; SMU-HEP-17-08; arXiv:1711.07916

Abstract: In the framework of quantum chromodynamics (QCD), parton distribution functions (PDFs) quantify how the momentum and spin of a hadron are divided among its quark and gluon constituents. Two main approaches exist to determine PDFs. The first approach, based on QCD factorization theorems, realizes a QCD analysis of a suitable set of hard-scattering measurements, often using a variety of hadronic observables. The second approach, based on first-principle operator definitions of PDFs, uses lattice QCD to compute directly some PDF-related quantities, such as their moments. Motivated by recent progress in both approaches, in this document we present an overview of lattice-QCD and global-analysis techniques used to determine unpolarized and polarized proton PDFs and their moments. We provide benchmark numbers to validate present and future lattice-QCD calculations and we illustrate how they could be used to reduce the PDF uncertainties in current unpolarized and polarized global analyses. This document represents a first step towards establishing a common language between the two communities, to foster dialogue and to further improve our knowledge of PDFs.

Note: 80 pages, 15 figures, 28 tables

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Contributing Institute(s):

1. NIC (ZEU-NIC)
2. Theorie-Gruppe (T)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF3-611) (POF3-611)
2. PDF4BSM - Parton Distributions in the Higgs Boson Era (335260) (335260)
3. 3DSPIN - 3-Dimensional Maps of the Spinning Nucleon (647981) (647981)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2017

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Database coverage:
; Published

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Report/Journal Article Lin, H.-W. ; Nocera, E. R. ; Olness, F. ; Orginos, K. ; Rojo, J. (Corresponding author) ; Accardi, A. ; Alexandrou, C. ; Bacchetta, A. ; Bozzi, G. ; Chen, J.-W. ; Collins, S. ; Cooper-Sarkar, A. ; Constantinou, M. ; Del Debbio, L. ; Engelhardt, M. ; Green, J.DESY* ; Gupta, R. ; Harland-Lang, L. A. ; Ishikawa, T. ; Kusina, A. ; Liu, K.-F. ; Liuti, S. ; Monahan, C. ; Nadolsky, P. ; Qiu, J.-W. ; Schienbein, I. ; Schierholz, G. ; Thorne, R. S. ; Vogelsang, W. ; Wittig, H. ; Yuan, C.-P. ; Zanotti, J.
Parton distributions and lattice QCD calculations: A community white paper
Progress in particle and nuclear physics 100, 107 - 160 (2018) [10.1016/j.ppnp.2018.01.007]2018     Files  Fulltext by arXiv.org Fulltext by arXiv.org Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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