https://scholars.lib.ntu.edu.tw/handle/123456789/572117
標題: | First Monte Carlo Global Analysis of Nucleon Transversity with Lattice QCD Constraints | 作者: | Lin H.-W Melnitchouk W Prokudin A Sato N Shows H III, Jefferson Lab Angular Momentum (JAM) Collaboration NOBUO SATO |
關鍵字: | Elementary particles; Inelastic scattering; Quantum theory; Tensors; Global analysis; Lattice QCD; Lattice simulation; Reanalysis; Semi-inclusive deep-inelastic scatterings; Transversity; Monte Carlo methods; article; Monte Carlo method; nucleon; quark | 公開日期: | 2018 | 卷: | 120 | 期: | 15 | 來源出版物: | Physical Review Letters | 摘要: | We report on the first global QCD analysis of the quark transversity distributions in the nucleon from semi-inclusive deep-inelastic scattering (SIDIS), using a new Monte Carlo method based on nested sampling and constraints on the isovector tensor charge gT from lattice QCD. A simultaneous fit to the available SIDIS Collins asymmetry data is compatible with gT values extracted from a comprehensive reanalysis of existing lattice simulations, in contrast to previous analyses, which found significantly smaller gT values. The contributions to the nucleon tensor charge from u and d quarks are found to be δu=0.3(2) and δd=-0.7(2) at a scale Q2=2 GeV2. ? 2018 authors. Published by the American Physical Society. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85045245728&doi=10.1103%2fPhysRevLett.120.152502&partnerID=40&md5=b31348e2e96f07bd121d47073ecf1b97 https://scholars.lib.ntu.edu.tw/handle/123456789/572117 |
ISSN: | 319007 | DOI: | 10.1103/PhysRevLett.120.152502 |
顯示於: | 數學系 |
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