https://scholars.lib.ntu.edu.tw/handle/123456789/572126
標題: | Confronting lattice parton distributions with global QCD analysis | 作者: | Bringewatt J Sato N Melnitchouk W Qiu J.-W Steffens F Constantinou M. NOBUO SATO |
公開日期: | 2021 | 卷: | 103 | 期: | 1 | 來源出版物: | Physical Review D | 摘要: | We present the first Monte Carlo based global QCD analysis of spin-averaged and spin-dependent parton distribution functions (PDFs) that includes nucleon isovector matrix elements in coordinate space from lattice QCD. We investigate the degree of universality of the extracted PDFs when the lattice and experimental data are treated under the same conditions within the Bayesian likelihood analysis. For the unpolarized sector, we find rather weak constraints from the current lattice data on the phenomenological PDFs, and difficulties in describing the lattice matrix elements at large spatial distances. In contrast, for the polarized PDFs we find good agreement between experiment and lattice data, with the latter providing significant constraints on the spin-dependent isovector quark and antiquark distributions. ? 2021 authors. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85099275822&doi=10.1103%2fPhysRevD.103.016003&partnerID=40&md5=6bf65a746fe59f983399881e72828959 https://scholars.lib.ntu.edu.tw/handle/123456789/572126 |
ISSN: | 24700010 | DOI: | 10.1103/PhysRevD.103.016003 |
顯示於: | 數學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。