Higgs Decays at NLO in the SMEFT
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arXiv
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| Auteurs principaux: | , , , , |
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| Format: | Preprint |
| Publié: |
2026
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| _version_ | 1866915882853203968 |
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| author | Bellafronte, Luigi Dawson, Sally Del Pio, Clara Forslund, Matthew Giardino, Pier Paolo |
| author_facet | Bellafronte, Luigi Dawson, Sally Del Pio, Clara Forslund, Matthew Giardino, Pier Paolo |
| contents | The calculation of precise predictions for Higgs decays is a necessary ingredient for determining Higgs properties at the LHC and future colliders. We compute all two- and three-body Higgs decays at next-to-leading order (NLO) in both QCD and electroweak interactions using the dimension-6 Standard Model Effective Field Theory (SMEFT). Results for four-body Higgs decays that are accurate to NLO QCD/electroweak order in the SMEFT are obtained using the narrow width approximation. Our results are contained in a flexible Monte Carlo program, NEWiSH, that is publicly available and we illustrate the impact of the NLO electroweak corrections for HL-LHC, Tera-Z, and Higgstrahlung projections. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_09599 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Higgs Decays at NLO in the SMEFT Bellafronte, Luigi Dawson, Sally Del Pio, Clara Forslund, Matthew Giardino, Pier Paolo High Energy Physics - Phenomenology The calculation of precise predictions for Higgs decays is a necessary ingredient for determining Higgs properties at the LHC and future colliders. We compute all two- and three-body Higgs decays at next-to-leading order (NLO) in both QCD and electroweak interactions using the dimension-6 Standard Model Effective Field Theory (SMEFT). Results for four-body Higgs decays that are accurate to NLO QCD/electroweak order in the SMEFT are obtained using the narrow width approximation. Our results are contained in a flexible Monte Carlo program, NEWiSH, that is publicly available and we illustrate the impact of the NLO electroweak corrections for HL-LHC, Tera-Z, and Higgstrahlung projections. |
| title | Higgs Decays at NLO in the SMEFT |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2601.09599 |