Form factors from string amplitudes
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arXiv
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866918088680669184 |
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| author | Cao, Qu |
| author_facet | Cao, Qu |
| contents | In this letter, we propose a stringy model for $n$-point tree-level form factor with the off-shell operator in the scalar and gluon theories, from the bosonic string disk amplitude: $n$ open string states and $1$ closed string state scatter on the disk. In the field-theory limit ($α'\to0$), the stringy form factor reduces to the form factor, helps us to investigate the hidden properties of the field-theory form factors, manifest the factorization and soft behaviors, and uncover more non-trivial relations between form factors and scattering amplitudes. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2504_15702 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Form factors from string amplitudes Cao, Qu High Energy Physics - Theory In this letter, we propose a stringy model for $n$-point tree-level form factor with the off-shell operator in the scalar and gluon theories, from the bosonic string disk amplitude: $n$ open string states and $1$ closed string state scatter on the disk. In the field-theory limit ($α'\to0$), the stringy form factor reduces to the form factor, helps us to investigate the hidden properties of the field-theory form factors, manifest the factorization and soft behaviors, and uncover more non-trivial relations between form factors and scattering amplitudes. |
| title | Form factors from string amplitudes |
| topic | High Energy Physics - Theory |
| url | https://arxiv.org/abs/2504.15702 |