Abstract
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 from lattice QCD. A simultaneous fit to the available SIDIS Collins asymmetry data is compatible with values extracted from a comprehensive reanalysis of existing lattice simulations, in contrast to previous analyses, which found significantly smaller values. The contributions to the nucleon tensor charge from and quarks are found to be and at a scale .
- Received 27 October 2017
DOI:https://doi.org/10.1103/PhysRevLett.120.152502
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Published by the American Physical Society