Speaker
Description
We use the light-cone quantization and abelian shockwave scattering picture akin to the standard CGC calculational framework to calculate the next-to-leading order quark-initiated contribution to the standard collinear factorization picture of semi-inclusive and inclusive deep inelastic scattering. In particular we show that treating the external partons as off-shell states removes collinear divergences from the hard factor and allows for a straightforward and physically transparent implementation of collinear factorization, matching the derivation of splitting functions from the UV-renormalization of parton densities. We propose this calculational procedure as a method for higher order calculations dilute-dense processes with colored targets, such as forward particle production in high energy proton-nucleus collisions.