Investigations of azimuthal asymmetry in semi-inclusive leptoproduction
| Autor: | Nicola Bianchi, K. A. Oganessyan, P. Di Nezza, H. Avakian |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Physics
Mathematics::Functional Analysis Particle physics Physics and Astronomy (miscellaneous) High Energy Physics::Lattice High Energy Physics::Phenomenology FOS: Physical sciences Nonlinear Sciences::Chaotic Dynamics High Energy Physics - Phenomenology Mathematics::Group Theory High Energy Physics - Phenomenology (hep-ph) Azimuthal asymmetry High Energy Physics::Experiment Engineering (miscellaneous) |
| Zdroj: | The European Physical Journal C. 5:681-685 |
| ISSN: | 1434-6052 1434-6044 |
| DOI: | 10.1007/s100529800873 |
| Popis: | We consider the azimuthal asymmetries in semi-inclusive deep inelastic leptoproduction arising due to both perturbative and nonperturbative effects at HERMES energies and show that the $k_T^2/Q^2$ order corrections to $< \cos��>$ and $< \cos2��>$ are significant. We also reconsider the results of perturbative effects for $< \cos��>$ at large momentum transfers \cite{A1} using the more recent sets of scale-dependent distribution and fragmentation functions, which bring up to $18{%}$ difference in $< \cos��>$. In the same approach we calculate the $< \cos2��>$ as well. 8 pages, LaTeX, 6 PS figures, final version, to appear in EPJC |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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