Cargando…
Wilson Coefficients and Natural Zeros from the On-Shell Viewpoint
We show how to simplify the calculation of the finite contributions from heavy particles to EFT Wilson coefficients by using on-shell methods. We apply the technique to the one-loop calculation of g − 2 and Hγγ, showing how finite contributions can be obtained from the product of tree-level amplitud...
| Autores principales: | , , |
|---|---|
| Lenguaje: | eng |
| Publicado: |
2022
|
| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1007/JHEP05(2022)120 http://cds.cern.ch/record/2800595 |
| _version_ | 1780972648649457664 |
|---|---|
| author | Delle Rose, Luigi von Harling, Benedict Pomarol, Alex |
| author_facet | Delle Rose, Luigi von Harling, Benedict Pomarol, Alex |
| author_sort | Delle Rose, Luigi |
| collection | CERN |
| description | We show how to simplify the calculation of the finite contributions from heavy particles to EFT Wilson coefficients by using on-shell methods. We apply the technique to the one-loop calculation of g − 2 and Hγγ, showing how finite contributions can be obtained from the product of tree-level amplitudes. In certain cases, due to a parity symmetry of these amplitudes, the total contribution adds up to zero, as previously found in the literature. Our method allows to search for new natural zeros, as well as to obtain non-zero contributions in a straightforward way. |
| id | cern-2800595 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2022 |
| record_format | invenio |
| spelling | cern-28005952023-08-10T09:58:45Zdoi:10.1007/JHEP05(2022)120http://cds.cern.ch/record/2800595engDelle Rose, Luigivon Harling, BenedictPomarol, AlexWilson Coefficients and Natural Zeros from the On-Shell Viewpointhep-phParticle Physics - PhenomenologyParticle Physics - TheoryWe show how to simplify the calculation of the finite contributions from heavy particles to EFT Wilson coefficients by using on-shell methods. We apply the technique to the one-loop calculation of g − 2 and Hγγ, showing how finite contributions can be obtained from the product of tree-level amplitudes. In certain cases, due to a parity symmetry of these amplitudes, the total contribution adds up to zero, as previously found in the literature. Our method allows to search for new natural zeros, as well as to obtain non-zero contributions in a straightforward way.We show how to simplify the calculation of the finite contributions from heavy particles to EFT Wilson coefficients by using on-shell methods. We apply the technique to the one-loop calculation of $g-2$ and $H\gamma\gamma$, showing how finite contributions can be obtained from the product of tree-level amplitudes. In certain cases, due to a parity symmetry of these amplitudes, the total contribution adds up to zero, as previously found in the literature. Our method allows to search for new natural zeros, as well as to obtain non-zero contributions in a straightforward way.arXiv:2201.10572oai:cds.cern.ch:28005952022-01-25 |
| spellingShingle | hep-ph Particle Physics - Phenomenology Particle Physics - Theory Delle Rose, Luigi von Harling, Benedict Pomarol, Alex Wilson Coefficients and Natural Zeros from the On-Shell Viewpoint |
| title | Wilson Coefficients and Natural Zeros from the On-Shell Viewpoint |
| title_full | Wilson Coefficients and Natural Zeros from the On-Shell Viewpoint |
| title_fullStr | Wilson Coefficients and Natural Zeros from the On-Shell Viewpoint |
| title_full_unstemmed | Wilson Coefficients and Natural Zeros from the On-Shell Viewpoint |
| title_short | Wilson Coefficients and Natural Zeros from the On-Shell Viewpoint |
| title_sort | wilson coefficients and natural zeros from the on-shell viewpoint |
| topic | hep-ph Particle Physics - Phenomenology Particle Physics - Theory |
| url | https://dx.doi.org/10.1007/JHEP05(2022)120 http://cds.cern.ch/record/2800595 |
| work_keys_str_mv | AT delleroseluigi wilsoncoefficientsandnaturalzerosfromtheonshellviewpoint AT vonharlingbenedict wilsoncoefficientsandnaturalzerosfromtheonshellviewpoint AT pomarolalex wilsoncoefficientsandnaturalzerosfromtheonshellviewpoint |