Speaker
Leonard Gamberg
(Penn State Berks)
Description
We present our results for TMD factorization at sub-leading power beyond, and leading order in the strong coupling, focusing on the matching of the large and small transverse momentum contribution in semi-inclusive deep inelastic scattering processes (SIDIS and Drell Yan). We pay special attention to azimuthal modulations of polarized and unpolarized cross sections such as the Cahn effect. Our results have consequences for the studying the intrinsic transverse motion of quarks in the nucleon, the so called 3-D structure of the nucleon, beyond leading power ("twist"). Additionally, our study has far reaching consequences for applying universality of TMDs beyond leading power to future (and past) phenomenological studies.
Primary author
Leonard Gamberg
(Penn State Berks)
