Amplitude bases in generic EFTs
Abstract We present for the first time an efficient algorithm to find a basis of kinematically independent structures built of (massless and massive) spinor helicity variables in four dimensions. This method provides a classification of independent contact terms for the scattering amplitudes with ge...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2022-08-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP08(2022)299 |
| _version_ | 1798037325518733312 |
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| author | Stefano De Angelis |
| author_facet | Stefano De Angelis |
| author_sort | Stefano De Angelis |
| collection | DOAJ |
| description | Abstract We present for the first time an efficient algorithm to find a basis of kinematically independent structures built of (massless and massive) spinor helicity variables in four dimensions. This method provides a classification of independent contact terms for the scattering amplitudes with generic masses, spins, and multiplicity in any effective field theory (EFT). These contact terms are in one-to-one correspondence with a complete set of irrelevant operators in the EFT. As basic applications of our method, we classify the D 2n F 4 contact terms in SU(N) Yang-Mills theory for n ≤ 8, dimension-six operators involving five W ± , Z and γ vector bosons, and spin-tidal effective interactions for spin-1 massive particles in gravitational theories. |
| first_indexed | 2024-04-11T21:25:02Z |
| format | Article |
| id | doaj.art-83b30d3feaa342378a075f0dec9f40c1 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-04-11T21:25:02Z |
| publishDate | 2022-08-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-83b30d3feaa342378a075f0dec9f40c12022-12-22T04:02:28ZengSpringerOpenJournal of High Energy Physics1029-84792022-08-012022813510.1007/JHEP08(2022)299Amplitude bases in generic EFTsStefano De Angelis0Centre for Theoretical Physics, Department of Physics and Astronomy, Queen Mary University of LondonAbstract We present for the first time an efficient algorithm to find a basis of kinematically independent structures built of (massless and massive) spinor helicity variables in four dimensions. This method provides a classification of independent contact terms for the scattering amplitudes with generic masses, spins, and multiplicity in any effective field theory (EFT). These contact terms are in one-to-one correspondence with a complete set of irrelevant operators in the EFT. As basic applications of our method, we classify the D 2n F 4 contact terms in SU(N) Yang-Mills theory for n ≤ 8, dimension-six operators involving five W ± , Z and γ vector bosons, and spin-tidal effective interactions for spin-1 massive particles in gravitational theories.https://doi.org/10.1007/JHEP08(2022)299Scattering AmplitudesEffective Field TheoriesSMEFT |
| spellingShingle | Stefano De Angelis Amplitude bases in generic EFTs Journal of High Energy Physics Scattering Amplitudes Effective Field Theories SMEFT |
| title | Amplitude bases in generic EFTs |
| title_full | Amplitude bases in generic EFTs |
| title_fullStr | Amplitude bases in generic EFTs |
| title_full_unstemmed | Amplitude bases in generic EFTs |
| title_short | Amplitude bases in generic EFTs |
| title_sort | amplitude bases in generic efts |
| topic | Scattering Amplitudes Effective Field Theories SMEFT |
| url | https://doi.org/10.1007/JHEP08(2022)299 |
| work_keys_str_mv | AT stefanodeangelis amplitudebasesingenericefts |