T-odd gluon distribution functions in a spectator model

• Published in: The European physical journal. C, Particles and fields Vol. 84; no. 6; pp. 576 - 25
• Main Authors: Bacchetta, Alessandro, Celiberto, Francesco Giovanni, Radici, Marco
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 06-06-2024; Springer Nature B.V; SpringerOpen
• Subjects: Approximation; Astronomy; Astrophysics and Cosmology; Distribution functions; Elementary Particles; Gluons; Hadrons; Heavy Ions; Measurement Science and Instrumentation; Nuclear Energy; Nuclear Physics; Nucleons; Partons; Physics; Physics and Astronomy; Quantum Field Theories; Quantum Field Theory; Quarks; Regular Article - Theoretical Physics; String Theory
• ISSN: 1434-6052; 1434-6044; 1434-6052
• DOI: 10.1140/epjc/s10052-024-12927-y

We present a model calculation of T-odd transverse-momentum-dependent distributions of gluons in the nucleon. The model is based on the assumption that a nucleon contains a gluon and a remainder treated as a single on-shell spectator particle. The mass of this spectator particle is allowed to take a continuous range of values, described by a spectral function. The final-state interaction that is necessary to generate T-odd functions is modeled as the exchange of a single gluon between the spectator and the outgoing parton.