Speaker
Dr
Bernhard Musch
(Jefferson Lab)
Description
Transverse momentum dependent parton distribution functions (TMDs) provide a framework to study the spin-dependent motion of quarks inside the nucleon. They are relevant for our understanding of azimuthal asymmetries in, e.g., semi-inclusive DIS. We present lattice calculations of TMDs based on spacially separated quark operators connected by a gauge link. Studies with straight gauge links reveal, e.g., visible dipole deformations of the quark density in the transverse momentum plain. Progress towards TMDs more suitable for the description of experimental processes and, in particular, single-spin asymmetries can be made with a staple shaped link geometry.
Primary author
Dr
Bernhard Musch
(Jefferson Lab)
Co-authors
Prof.
Andreas Schäfer
(Universität Regensburg, Germany)
Prof.
John Negele
(Massachusetts Institute of Technology, MA, USA)
Dr
Philipp Hägler
(Technische Universität München)
