An attempt to understand exclusive pi+ electroproduction
Fuente:
arXiv
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| Auteurs principaux: | , |
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| Format: | Preprint |
| Publié: |
2009
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| _version_ | 1866929682406965248 |
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| author | Goloskokov, S. V. Kroll, P. |
| author_facet | Goloskokov, S. V. Kroll, P. |
| contents | Hard exclusive pi+ electroproduction is investigated within the handbag approach. The prominent role of the pion-pole contribution is demonstrated. It is also shown that the experimental data require a twist-3 effect which ensues from the helicity-flip generalized parton distribution H_T and the twist-3 pion wave function. The results calculated from this handbag approach are compared in detail with the experimental data on cross sections and spin asymmetries measured with a polarized target. It is also commented on consequences of this approach for exclusive π^0 and vector-meson electroproduction. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_0906_0460 |
| institution | arXiv |
| publishDate | 2009 |
| record_format | arxiv |
| spellingShingle | An attempt to understand exclusive pi+ electroproduction Goloskokov, S. V. Kroll, P. High Energy Physics - Phenomenology Hard exclusive pi+ electroproduction is investigated within the handbag approach. The prominent role of the pion-pole contribution is demonstrated. It is also shown that the experimental data require a twist-3 effect which ensues from the helicity-flip generalized parton distribution H_T and the twist-3 pion wave function. The results calculated from this handbag approach are compared in detail with the experimental data on cross sections and spin asymmetries measured with a polarized target. It is also commented on consequences of this approach for exclusive π^0 and vector-meson electroproduction. |
| title | An attempt to understand exclusive pi+ electroproduction |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/0906.0460 |