Power corrections to the heavy electron form factor
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arXiv
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| Format: | Preprint |
| Veröffentlicht: |
2025
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| _version_ | 1866909737322283008 |
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| author | Venkata, Aniruddha |
| author_facet | Venkata, Aniruddha |
| contents | We study the first power correction to the heavy electron form factor in QED and show that it factorizes as a derivative operator. We discuss the result in QED with no light fermions, where the first power correction can be written explicitly in terms of one-loop integrals and the anomalous magnetic moment. In the presence of light fermions, the heavy electron form factor admits a representation as a sum over matrix elements, each of which receives corrections from higher orders in perturbation theory. From this analysis, we are able to extract the next-to-leading power soft photon theorem in the limit of heavy fermion-initiated dijet events. This is a first step towards studying the heavy quark form factor in the non-abelian theory. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_20786 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Power corrections to the heavy electron form factor Venkata, Aniruddha High Energy Physics - Phenomenology We study the first power correction to the heavy electron form factor in QED and show that it factorizes as a derivative operator. We discuss the result in QED with no light fermions, where the first power correction can be written explicitly in terms of one-loop integrals and the anomalous magnetic moment. In the presence of light fermions, the heavy electron form factor admits a representation as a sum over matrix elements, each of which receives corrections from higher orders in perturbation theory. From this analysis, we are able to extract the next-to-leading power soft photon theorem in the limit of heavy fermion-initiated dijet events. This is a first step towards studying the heavy quark form factor in the non-abelian theory. |
| title | Power corrections to the heavy electron form factor |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2504.20786 |