One-loop Bern-Carrasco-Johansson Numerators on Quadratic Propagators from the Worldsheet
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arXiv
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| Hauptverfasser: | , , |
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| Format: | Preprint |
| Veröffentlicht: |
2023
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| _version_ | 1866913446205849600 |
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| author | Dong, Jin Zhang, Yao-Qi Zhang, Yong |
| author_facet | Dong, Jin Zhang, Yao-Qi Zhang, Yong |
| contents | We introduce a novel approach for deriving one-loop Bern-Carrasco-Johansson (BCJ) numerators and reveal the worldsheet origin of the one-loop double copy. Our work shows that expanding Cachazo-He-Yuan half-integrands into generalized Parke-Taylor factors intrinsically generates BCJ numerators on quadratic propagators satisfying Jacobi identities. We validate our methodology by successfully reproducing one-loop BCJ numerators for Non-Linear Sigma Model as well as those of pure Yang-Mills theory in four dimensions with all-plus or single-minus helicities. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2312_01580 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | One-loop Bern-Carrasco-Johansson Numerators on Quadratic Propagators from the Worldsheet Dong, Jin Zhang, Yao-Qi Zhang, Yong High Energy Physics - Theory We introduce a novel approach for deriving one-loop Bern-Carrasco-Johansson (BCJ) numerators and reveal the worldsheet origin of the one-loop double copy. Our work shows that expanding Cachazo-He-Yuan half-integrands into generalized Parke-Taylor factors intrinsically generates BCJ numerators on quadratic propagators satisfying Jacobi identities. We validate our methodology by successfully reproducing one-loop BCJ numerators for Non-Linear Sigma Model as well as those of pure Yang-Mills theory in four dimensions with all-plus or single-minus helicities. |
| title | One-loop Bern-Carrasco-Johansson Numerators on Quadratic Propagators from the Worldsheet |
| topic | High Energy Physics - Theory |
| url | https://arxiv.org/abs/2312.01580 |