Transverse momentum dependent distribution functionh1T⊥and the single spin asymmetryAUTsin(3ϕ−3S)

2008/05/22 by H. Avakian, А. В. Ефремов, A. V. Efremov +3 · 66 citations
Mathematics · Physics and Astronomy · #Deep inelastic scattering #Distribution (mathematics) #Distribution function #Function (biology) #High-Energy Particle Collisions Research #Inelastic scattering #Mathematical analysis #Mathematical physics #Mathematics #Nuclear physics #Nucleon #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Scattering #hep-ph

paper · pdf · doi:10.1103/physrevd.78.114024

published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 78(11) (American Physical Society) · 15 pages, 9 figures

arxiv created 2008/05/22 · openalex publication_date 2008/12/19 · arxiv updated 2014/11/18 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

The leading twist transverse momentum dependent parton distribution function h_1T^\ensuremath⊥ is studied. We review the theoretical properties of this function, and compute it in the bag model. We find in the bag model an interesting relation, and observe it to hold also in other relativistic models: The difference between helicity and transversity distributions, often said to be a 'measure of relativistic effects' in the nucleon, is related to h_1T^\ensuremath⊥. This function is chirally odd and can be accessed in combination with the Collins effect in semi-inclusive deep-inelastic scattering, where it gives rise to an azimuthal single spin asymmetry proportional to sin(3\ensuremathφ\ensuremath-\ensuremathφ_S). We discuss preliminary COMPASS data on that observable and make predictions for future experiments on various targets at JLab, COMPASS, and HERMES.

Citations

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• Single-transverse-spin asymmetries: From deep inelastic scattering to hadronic collisions
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• Measurement of Azimuthal Asymmetries in Inclusive Production of Hadron Pairs ine+e−Annihilation at Belle

Cited by

• The Drell-Yan process with pions and polarized nucleons
• Transverse momentum and transverse momentum distributions in the MIT bag model