Lin, Huey-Wen and Nocera, Emanuele R. and Olness, Fred and Orginos, Kostas and Rojo, Juan and Accardi, Alberto and Alexandrou, Constantia and Bacchetta, Alessandro and Bozzi, Giuseppe and Chen, Jiunn-Wei and Collins, Sara and Cooper-Sarkar, Amanda and Constantinou, Martha and Del Debbio, Luigi and Engelhardt, Michael and Green, Jeremy and Gupta, Rajan and Harland-Lang, Lucian A. and Ishikawa, Tomomi and Kusina, Aleksander and Liu, Keh-Fei and Liuti, Simonetta and Monahan, Christopher and Nadolsky, Pavel and Qiu, Jian-Wei and Schienbein, Ingo and Schierholz, Gerrit and Thorne, Robert S. and Vogelsang, Werner and Wittig, Hartmut and Yuan, C. -P. and Zanotti, James (2018) Parton distributions and lattice QCD calculations: A community white paper. PROGRESS IN PARTICLE AND NUCLEAR PHYSICS, 100. pp. 107-160. ISSN 0146-6410, 1873-2224
Full text not available from this repository. (Request a copy)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. (C) 2018 Elsevier B.V. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | DEEP-INELASTIC-SCATTERING; 3-LOOP SPLITTING FUNCTIONS; STRUCTURE-FUNCTION G(1); QUANTUM-FIELD THEORIES; NONPERTURBATIVE RENORMALIZATION; VOLUME DEPENDENCE; NUCLEON STRUCTURE; ENERGY-SPECTRUM; MATRIX-ELEMENTS; CHIRAL-SYMMETRY; Lattice QCD; Global QCD fits; Unpolarized/polarized parton distribution functions (PDFs) |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Petra Gürster |
| Date Deposited: | 30 Jun 2020 12:54 |
| Last Modified: | 30 Jun 2020 12:54 |
| URI: | https://pred.uni-regensburg.de/id/eprint/14616 |
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