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Title: First Monte Carlo Global Analysis of Nucleon Transversity with Lattice QCD Constraints

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 $$g_T$$ 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$^2$.
 [1] ; ORCiD logo [2] ; ORCiD logo [3] ; ORCiD logo [4] ;  [5]
  1. Michigan State Univ., East Lansing, MI (United States)
  2. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  3. Pennsylvania State Univ., University Park, PA (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  4. Univ. of Connecticut, Storrs, CT (United States)
  5. Louisiana State Univ., Baton Rouge, LA (United States)
Publication Date:
Report Number(s):
JLAB-THY-17-2574; DOE/OR/23177-4241; arXiv:1710.09858
Journal ID: ISSN 0031-9007
Grant/Contract Number:
AC05-06OR23177; PHY-1623454; PHY-1653405; PHY-1659177
Published Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 120; Journal Issue: 15; Journal ID: ISSN 0031-9007
American Physical Society (APS)
Research Org:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26); National Science Foundation (NSF)
Contributing Orgs:
Jefferson Lab Angular Momentum (JAM) Collaboration
Country of Publication:
United States
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; electron-ion collisions; lattice QCD; nucleon distribution; polarization phenomena; quantum chromodynamics; hybrid Monte Carlo algorithm; lattice field theory
OSTI Identifier:
Alternate Identifier(s):
OSTI ID: 1433087