Speaker
Owen Page
(Pennsylvania State University)
Description
I investigate proton structure through the subleading observable called the Cahn effect. Equation of motion relations constrain the TMDs in the observable and relate them to leading power TMDs. I calculate the relevant functions and verify the equation of motion relation at LO and NLO in the strong coupling. In the calculation I show the cancelation of rapidity divergences using a novel regulator associated with the lightcone propagator. These calculations are necessary to study the large qT matching, particularly in the context of the independence of the observable on rapidity divergent terms.