Nucleon helicity and transversity parton distributions from lattice QCD
By Jiunn-Wei Chen, Saul D. Cohen, X. Ji, Huey-Wen Lin, Jian-Hui Zhang. 2016
194 citations recorded by the source corpus.
We present the first lattice-QCD calculation of the isovector polarized parton distribution functions (both helicity and transversity) using the large-momentum effective field theory (LaMET) approach for direct Bjorken-x dependence. We first review the detailed steps of the procedure in the unpolarized case, then generalize to the helicity and transversity cases. We also derive a new mass-correction formulation for all three cases. We then compare the effects of each finite-momentum correction using lattice data calculated at Mπ≈310MeV. Finally, we discuss the implications of these results for the poorly known antiquark structure and predict the sea-flavor asymmetry in the transversely polarized nucleon.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/219e7986e01be3ded93bb0d70ac56cdf38e6168f
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In Nuclear and High Energy Physics
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Citations in the corpus
- A Guide to Light-Cone PDFs from Lattice QCD: An Overview of Approaches, Techniques, and Results (2018, methodology): “As a consequence, the first studies of quasi-PDFs on the lattice were either neglecting renormalization [46] or multiplying naively the matrix elements with the renormalization function of the corresponding local operators [100, 107, 108], a procedure understood as normalization.”
- Parton distributions and lattice-QCD calculations: Toward 3D structure (2020, background): “PDFs at the physical point with quasi-distributions Pioneering works have shown great promise in obtaining quantitative results for the unpolarized, helicity and transversity quark and antiquark distributions (Alexandrou et al., 2014, 2015; Chen et al., 2016; Lin, 2014a,b; Lin et al., 2015).”
- A complete non-perturbative renormalization prescription for quasi-PDFs (2017, result): “[13, 14, 15, 16, 17] and all these results are promising, i.”