Speaker
Description
We present recent lattice QCD results on transverse momentum dependent distributions (TMDs) using boosted hadron correlators in the Coulomb gauge. This method avoids power divergences from Wilson lines and improves access to large momenta and long-range separations. We compute isovector helicity and flavor-dependent unpolarized TMDPDFs of the proton at physical quark masses, using domain-wall fermions and Coulomb-gauge-fixed bilocal correlators. The results reveal mild flavor dependence and consistent helicity-to-unpolarized ratios, with direct comparison to global fits. We also demonstrate the method’s effectiveness for calculating unpolarized and polarized proton collinear PDFs, showing consistency with global fits. These results highlight the Coulomb-gauge boosted-field framework as a unified tool for studying nucleon structure on the lattice.
| Track | 2: Polarized deep-inelastic physics |
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