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T-odd gluon distribution functions in a spectator model

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arxiv 2402.17556 v1 pith:3OBPCMHE submitted 2024-02-27 hep-ph hep-exnucl-exnucl-th

Alessandro Bacchetta , Francesco Giovanni Celiberto , Marco Radici This is my paper · ORCID
classification hep-phhep-exnucl-exnucl-th
keywords spectatorgluonmodelt-oddfunctionsnucleonparticlesingle
verification ladder T0 review T1 audit T2 compute T3 formal
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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 can emit a gluon, and what remains after the emission is treated as a single spectator particle. This spectator particle is considered to be on-shell, but its mass 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.

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Cited by 4 Pith papers

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  3. T-odd transverse momentum dependent gluon distributions for tensor polarized deuteron in a spectator model

    hep-ph 2026-07 conditional novelty 5.0 of 10

    Six leading-twist T-odd gluon TMDs of a tensor-polarized deuteron are derived analytically and evaluated numerically in a spectator model with single-gluon final-state interaction.

  4. The 3D structure of the Nucleon in momentum space: TMD phenomenology

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    A review showing unpolarized quark TMD fits now reach collinear-PDF-like precision, while polarized and gluon TMDs remain less constrained.

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