TMD Collaboration Meeting

Session

Talks III

16 Jun 2022, 09:00

Canyon (Hilton Santa Fe Historic Plaza)

28. Lattice QCD Determination of the Bjorken-x Dependence of PDFs at Next-to-next-to-leading Order

Yong Zhao (Argonne National Laboratory)

16/06/2022, 09:00

The large-momentum effective theory (LaMET) is a systematic approach to calculate parton physics from Euclidean approaches such as lattice QCD. With major improvements in the non-perturbative renormalization and perturbative matching, the lattice calculation of PDFs with LaMET is now entering the stage of precision control. In this talk, I will present a state-of-the-art lattice QCD...

25. Improving Lattice QCD calculations of the Collins-Soper Kernel

Artur Avkhadiev (Massachusetts Institute of Technology)

16/06/2022, 09:30

Collins-Soper (CS) evolution kernel is critical to relate transverse-momentum-dependent parton distribution functions (TMDPDFs) at different scales. When the parton transverse momentum is small, q_T \sim \Lambda_{QCD}, the CS kernel is non-perturbative; the determination of the CS kernel in the non-perturbative regime can only be done through experiment or first-principles calculations. I will...

29. Quark spin-orbit correlations in the proton from lattice QCD

Michael Engelhardt

16/06/2022, 10:00

Generalized transverse momentum-dependent parton distributions (GTMDs)
provide a comprehensive framework for imaging the internal structure of
the proton. In particular, by encoding the simultaneous distribution of
quark transverse positions and momenta, they allow one to directly access
longitudinal quark orbital angular momentum, and, moreover, to
correlate it with the quark helicity....