First Monte Carlo Global Analysis of Nucleon Transversity with Lattice QCD Constraints
Journal Article
·
· Physical Review Letters
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$^2$.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP); National Science Foundation (NSF)
- Contributing Organization:
- Jefferson Lab Angular Momentum (JAM) Collaboration
- Grant/Contract Number:
- AC05-06OR23177; PHY-1623454; PHY-1653405; PHY-1659177
- OSTI ID:
- 1432748
- Alternate ID(s):
- OSTI ID: 1433087
- Report Number(s):
- JLAB-THY-17-2574; DOE/OR/23177-4241; arXiv:1710.09858; PRLTAO; 152502
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Vol. 120 Journal Issue: 15; ISSN 0031-9007
- Publisher:
- American Physical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 53 works
Citation information provided by
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