Generalized TMDs

Generalized transverse-momentum dependent parton distributions (GTMDs) encode the most general parton structure of hadrons. In this contribution, which is largely based on a recent publication,1 we focus on two twist-2 GTMDs which are denoted by F1,4 and G1,1 in parts of the literature. As already s...

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Bibliographic Details
Published in:International journal of modern physics. Conference series 2015, Vol.37, p.1560037
Main Authors: Kanazawa, Koichi, Lorcé, Cedric, Metz, Andreas, Pasquini, Barbara, Schlegel, Marc
Format: Article
Language:English
Subjects:
Angular momentum
Hadrons
Partons
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Summary:Generalized transverse-momentum dependent parton distributions (GTMDs) encode the most general parton structure of hadrons. In this contribution, which is largely based on a recent publication,1 we focus on two twist-2 GTMDs which are denoted by F1,4 and G1,1 in parts of the literature. As already shown previously, both GTMDs have a close relation to orbital angular momentum of partons inside a hadron. However, recently even the mere existence of F1,4 and G1,1 has been doubted. We explain why this claim does not hold. We support our model-independent considerations by calculating the GTMDs in two spectator models and in perturbative QCD. For the model results we also explicitly check the relation to the orbital angular momentum of partons inside hadrons.
ISSN:2010-1945
2010-1945
DOI:10.1142/S201019451560037X