Generalized Cahn effect and parton 3D motion in a covariant approach

Abstract

The Cahn effect and the unintegrated unpolarized parton distribution function $f_1^q(x,{\mathbf{p}}_T)$ are studied in a covariant approach. The Cahn effect is compared with some other effects due to the parton intrinsic motion. The comparison suggests that the present understanding of parton transverse momenta and intrinsic motion in general is still rather incomplete. The new relation for $f_1^q(x,{\mathbf{p}}_T)$ is obtained in the framework of the covariant parton model from which a prediction for this distribution function follows.

8 pages, 2 figures. Updated version is accepted for publication in Phys.Rev.D

References in corpus (9)

• Fully Unintegrated Parton Correlation Functions and Factorization in Lowest Order Hard Scattering
• Intrinsic transverse parton momenta in deeply inelastic reactions
• Endpoint singularities in unintegrated parton distributions
• Transverse momentum dependent distribution functions in a covariant parton model approach with quark orbital motion
• Strangeness asymmetry of the nucleon in the statistical parton model
• On the importance of Lorentz structure in the parton model: target mass corrections, transverse momentum dependence, positivity bounds
• Parton distribution functions and quark orbital motion
• Transversity and intrinsic motion of the constituents
• The pretzelosity distribution function and intrinsic motion of the constituents in nucleon

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