Structure of the nucleon at leading and subleading twist in the covariant parton model

0543191 - FZÚ 2022 RIV US eng J - Journal Article
Bastami, S. - Efremov, A. - Schweitzer, P. - Teryaev, O.V. - Závada, Petr
Structure of the nucleon at leading and subleading twist in the covariant parton model.
Physical Review D. Roč. 103, č. 1 (2021), č. článku 014024. ISSN 2470-0010. E-ISSN 2470-0029
R&D Projects: GA MŠMT(CZ) LTT17018
Institutional support: RVO:68378271
Keywords : parton: distribution function * correlation function: quark * nucleon: structure * covariance * model: parton
OECD category: Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
Impact factor: 5.407, year: 2021
Method of publishing: Open access

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.
Permanent Link: http://hdl.handle.net/11104/0320461