arXiv:2011.06203·v1·High Energy Physics — Phenomenology
Structure of the nucleon at leading and subleading twist in the covariant parton model
S.Bastami🇺🇸 · A.V.Efremov🇷🇺 · P.Schweitzer🇺🇸 · O.V.Teryaev🇷🇺 · P.Zavada🇨🇿
Abstract
The covariant parton model is generalized to describe quark correlators in a systematic way. Previous results are reproduced for the T-even leading-twist transverse momentum dependent parton distribution functions (TMDs), and for the first time all T-even twist-3 TMDs are evaluated in this model. We apply the approach to evaluate the fully unintegrated quark correlator which allows us to understand the model-specific relations between different TMDs. We verify the consistency of the approach, present numerical results and compare to available TMD parametrizations.
Comments: 20 pages, 6 figures