Leading and higher twist transverse momentum dependent parton distribution functions in the spectator model

Understand

Transverse momentum dependent parton distribution functions, also abbreviated as TMDs, offer a three-dimensional picture of hadrons by taking the intrinsic transverse momentum of the parton into consideration.

• Hence, they are very important for us to understand the structure of hadrons.
• In this article, we calculate and summarize all TMDs of quark through the spectator model, from twist-2 to twist-4.
• Especially, we give complete results of TMDs at twist-4.