Axial form-factor and induced pseudoscalar form-factor of the nucleons
| dc.creator | Wang, Zhi-Gang | |
| dc.creator | Wan, Shao-Long | |
| dc.creator | Yang, Wei-Min | |
| dc.date | 2006-01-09 | |
| dc.date | 2006-04-07 | |
| dc.date.accessioned | 2026-07-07T12:25:22Z | |
| dc.date.available | 2026-07-07T12:25:22Z | |
| dc.description | In this article, we calculate the axial and the induced pseudoscalar form-factors $G_A(t=-Q^2)$ and $G_P(t=-Q^2)$ of the nucleons in the framework of the light-cone QCD sum-rules approach up to twist-6 three valence quark light-cone distribution amplitudes, and observe that the form-factors $G_A(t=-Q^2)$ and $G_P(t=-Q^2)$ at intermediate and large momentum transfers with $Q^2> 2 GeV^2$ have significant contributions from the end-point (soft) terms. The numerical values for the axial form-factor $G_A(t=-Q^2)$ are compatible with the experimental data and theoretical calculations, for example, the chiral quark models and lattice QCD. The numerical values for the induced pseudoscalar form-factor $G_P(t=-Q^2)$ are compatible with the calculation from the Bethe-Salpeter equation. | |
| dc.description | 21 pages, 12 figures, revised version | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0601060 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0601060 | |
| dc.identifier | Eur.Phys.J.C47:375-384,2006 | |
| dc.identifier | doi:10.1140/epjc/s2006-02570-2 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/214594 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Axial form-factor and induced pseudoscalar form-factor of the nucleons | |
| dc.type | text |