This item is non-discoverable
Loading...
Non-discoverable
Parton distributions and lattice QCD calculations: A community white paper
Lin, HW Nocera, ER Olness, F Orginos, K Rojo, J Accardi, A Alexandrou, C Bacchetta, A Bozzi, G Chen, JW
Lin, HW
Nocera, ER
Olness, F
Orginos, K
Rojo, J
Accardi, A
Alexandrou, C
Bacchetta, A
Bozzi, G
Chen, JW
Citations
Altmetric:
Genre
Pre-print
Date
2018-05-01
Advisor
Committee member
Group
Department
Permanent link to this record
Collections
Research Projects
Organizational Units
Journal Issue
DOI
10.1016/j.ppnp.2018.01.007
Abstract
© 2018 Elsevier B.V. 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.
Description
Citation
Citation to related work
Elsevier BV
Has part
Progress in Particle and Nuclear Physics
ADA compliance
For Americans with Disabilities Act (ADA) accommodation, including help with reading this content, please contact scholarshare@temple.edu