First Monte Carlo Global Analysis of Nucleon Transversity with Lattice QCD Constraints
Abstract
We report on the first global QCD analysis of the quark transversity distributions in the nucleon from semiinclusive deepinelastic scattering (SIDIS), using a new Monte Carlo method based on nested sampling and constraints on the isovector tensor charge $$g_T$$ from lattice QCD. A simultaneous fit to the available SIDIS Collins asymmetry data is compatible with $$g_T$$ values extracted from a comprehensive reanalysis of existing lattice simulations, in contrast to previous analyses, which found significantly smaller $$g_T$$ values. The contributions to the nucleon tensor charge from $u$ and $d$ quarks are found to be $$\delta u = 0.3(2)$$ and $$\delta d = 0.7(2)$$ at a scale $Q^2 = 2$ GeV$^2$.
 Authors:

 (JAM) Collaboration
 Publication Date:
 Research Org.:
 Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
 Sponsoring Org.:
 USDOE Office of Science (SC), Nuclear Physics (NP) (SC26); National Science Foundation (NSF)
 Contributing Org.:
 Jefferson Lab Angular Momentum (JAM) Collaboration
 OSTI Identifier:
 1432748
 Alternate Identifier(s):
 OSTI ID: 1433087
 Report Number(s):
 JLABTHY172574; DOE/OR/231774241; arXiv:1710.09858
Journal ID: ISSN 00319007; PRLTAO; 152502
 Grant/Contract Number:
 AC0506OR23177; PHY1623454; PHY1653405; PHY1659177
 Resource Type:
 Published Article
 Journal Name:
 Physical Review Letters
 Additional Journal Information:
 Journal Name: Physical Review Letters Journal Volume: 120 Journal Issue: 15; Journal ID: ISSN 00319007
 Publisher:
 American Physical Society
 Country of Publication:
 United States
 Language:
 English
 Subject:
 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; electronion collisions; lattice QCD; nucleon distribution; polarization phenomena; quantum chromodynamics; hybrid Monte Carlo algorithm; lattice field theory
Citation Formats
Lin, H. W., Melnitchouk, W., Prokudin, A., Sato, N., Shows, H., and Jefferson Lab Angular Momentum. First Monte Carlo Global Analysis of Nucleon Transversity with Lattice QCD Constraints. United States: N. p., 2018.
Web. doi:10.1103/PhysRevLett.120.152502.
Lin, H. W., Melnitchouk, W., Prokudin, A., Sato, N., Shows, H., & Jefferson Lab Angular Momentum. First Monte Carlo Global Analysis of Nucleon Transversity with Lattice QCD Constraints. United States. doi:10.1103/PhysRevLett.120.152502.
Lin, H. W., Melnitchouk, W., Prokudin, A., Sato, N., Shows, H., and Jefferson Lab Angular Momentum. Wed .
"First Monte Carlo Global Analysis of Nucleon Transversity with Lattice QCD Constraints". United States. doi:10.1103/PhysRevLett.120.152502.
@article{osti_1432748,
title = {First Monte Carlo Global Analysis of Nucleon Transversity with Lattice QCD Constraints},
author = {Lin, H. W. and Melnitchouk, W. and Prokudin, A. and Sato, N. and Shows, H. and Jefferson Lab Angular Momentum},
abstractNote = {We report on the first global QCD analysis of the quark transversity distributions in the nucleon from semiinclusive deepinelastic scattering (SIDIS), using a new Monte Carlo method based on nested sampling and constraints on the isovector tensor charge $g_T$ from lattice QCD. A simultaneous fit to the available SIDIS Collins asymmetry data is compatible with $g_T$ values extracted from a comprehensive reanalysis of existing lattice simulations, in contrast to previous analyses, which found significantly smaller $g_T$ values. The contributions to the nucleon tensor charge from $u$ and $d$ quarks are found to be $\delta u = 0.3(2)$ and $\delta d = 0.7(2)$ at a scale $Q^2 = 2$ GeV$^2$.},
doi = {10.1103/PhysRevLett.120.152502},
journal = {Physical Review Letters},
number = 15,
volume = 120,
place = {United States},
year = {2018},
month = {4}
}
DOI: 10.1103/PhysRevLett.120.152502
Web of Science
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