Pion off-shell form factors
Fuente:
arXiv
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| Autores principales: | , |
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| Formato: | Preprint |
| Publicado: |
2026
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| Acceso en línea: | |
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| _version_ | 1866914607339143168 |
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| author | Bondarenko, S. G. Slautin, M. K. |
| author_facet | Bondarenko, S. G. Slautin, M. K. |
| contents | In the paper, the electromagnetic off-shell pion form factors in the Bethe-Salpeter formalism with a separable kernel are considered. Different types of vertex functions of a pion are investigated. The separable kernel of the quark-antiquark interaction is used to obtain an analytical solution of the equation. The pion constants and the form factors on both the on-shell and off-shell surfaces are calculated. The differential cross section of the reaction $^1H(e,e' π^ +) n$ is also calculated in the paper. All the obtained results are compared with experimental data. The fulfillment of the Ward-Takahashi identity for the off-shell form factors $F_1(Q^2,t)$ and $F_2(Q^2,t)$ of a pion is verified. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_28193 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Pion off-shell form factors Bondarenko, S. G. Slautin, M. K. Nuclear Theory In the paper, the electromagnetic off-shell pion form factors in the Bethe-Salpeter formalism with a separable kernel are considered. Different types of vertex functions of a pion are investigated. The separable kernel of the quark-antiquark interaction is used to obtain an analytical solution of the equation. The pion constants and the form factors on both the on-shell and off-shell surfaces are calculated. The differential cross section of the reaction $^1H(e,e' π^ +) n$ is also calculated in the paper. All the obtained results are compared with experimental data. The fulfillment of the Ward-Takahashi identity for the off-shell form factors $F_1(Q^2,t)$ and $F_2(Q^2,t)$ of a pion is verified. |
| title | Pion off-shell form factors |
| topic | Nuclear Theory |
| url | https://arxiv.org/abs/2605.28193 |