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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2302.09868 |
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| _version_ | 1866917603286450176 |
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| author | Fadin, Victor S. Fucilla, Michael Papa, Alessandro |
| author_facet | Fadin, Victor S. Fucilla, Michael Papa, Alessandro |
| contents | The effective Reggeon-Reggeon-gluon vertex, known as Lipatov vertex, is the key ingredient that allows to develop the BFKL approach in QCD. Within the next-to-leading logarithmic approximation, it is sufficient to know its one-loop corrections, in dimensional regularization ($D=4+2ε$), up to the constant term in the $ε$-expansion. In the next-to-next-to-leading approximation, however, the one-loop Lipatov vertex is needed up to the order $ε^2$. In this paper we present the expression for this vertex in dimensional regularization up to the required accuracy. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2302_09868 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | One-loop Lipatov vertex in QCD with higher $ε$-accuracy Fadin, Victor S. Fucilla, Michael Papa, Alessandro High Energy Physics - Phenomenology High Energy Physics - Theory The effective Reggeon-Reggeon-gluon vertex, known as Lipatov vertex, is the key ingredient that allows to develop the BFKL approach in QCD. Within the next-to-leading logarithmic approximation, it is sufficient to know its one-loop corrections, in dimensional regularization ($D=4+2ε$), up to the constant term in the $ε$-expansion. In the next-to-next-to-leading approximation, however, the one-loop Lipatov vertex is needed up to the order $ε^2$. In this paper we present the expression for this vertex in dimensional regularization up to the required accuracy. |
| title | One-loop Lipatov vertex in QCD with higher $ε$-accuracy |
| topic | High Energy Physics - Phenomenology High Energy Physics - Theory |
| url | https://arxiv.org/abs/2302.09868 |