Conveners
分会三
- 其安 张 ()
We employed a novel "blending method" to investigate the quark spin contributions in the octet baryons. Our lattice QCD calculations were performed on three ensembles, covering two pion masses and two lattice spacings. The sea quark contribution to the quark spin is found to observe SU(3) flavor symmetry to a good approximation within error. In contrast, the valence quark contribution exhibits...
We report a new high precision calculation of the isospin vector charge $g_{S,T}$ of the nucleon using recently proposed ``blending" method which provides a high-accuracy stochastic estimate of the all-to-all fermion propagator. By combining the current-inspired interpolation field, which can efficiently cancel the major excited state contamination, we found that both $g_{S}$ and $g_T$ have...
We present a lattice QCD calculation of the Collins-Soper kernel, which governs the rapidity evolution of transverse-momentum-dependent (TMD) distributions, using Large Momentum Effective Theory (LaMET). Quasi-TMD wave functions are computed with three meson momenta on CLQCD configurations (multiple lattice spacings and pion masses) employing clover quarks and varied hadronic states. HYP...
Transverse-momentum-dependent parton distribution functions (TMDPDFs) are important in revealing the 3D structure of hadrons. Among these distributions, the T-odd Boer-Mulders TMDPDF describes the transversely polarized quark distribution in an unpolarized hadron. Within large-momentum effective theory, I show a lattice calculation of both nucleon and pion Boer-Mulders functions. The...
