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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2508.11539 |
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| _version_ | 1866915660566626304 |
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| author | Degrassi, Giuseppe Gröber, Ramona Slavich, Pietro |
| author_facet | Degrassi, Giuseppe Gröber, Ramona Slavich, Pietro |
| contents | We study the impact of the two-loop corrections controlled by the BSM Higgs couplings on the cross section for the production of a pair of SM-like Higgs bosons via gluon fusion in the aligned THDM. To this aim, we reassess the two-loop calculation of $λ_{hhh}$, we compute for the first time the two-loop corrections to $λ_{hhH}$, and we include the relevant corrections to the Higgs-gluon couplings and to the s-channel propagators entering the $gg \rightarrow hh$ amplitude. We discuss the numerical impact of the two-loop BSM contributions, first on the individual couplings and then on the prediction for the pair-production cross section, in two benchmark scenarios for the aligned THDM. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_11539 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Two-loop BSM contributions to Higgs pair production in the aligned THDM Degrassi, Giuseppe Gröber, Ramona Slavich, Pietro High Energy Physics - Phenomenology We study the impact of the two-loop corrections controlled by the BSM Higgs couplings on the cross section for the production of a pair of SM-like Higgs bosons via gluon fusion in the aligned THDM. To this aim, we reassess the two-loop calculation of $λ_{hhh}$, we compute for the first time the two-loop corrections to $λ_{hhH}$, and we include the relevant corrections to the Higgs-gluon couplings and to the s-channel propagators entering the $gg \rightarrow hh$ amplitude. We discuss the numerical impact of the two-loop BSM contributions, first on the individual couplings and then on the prediction for the pair-production cross section, in two benchmark scenarios for the aligned THDM. |
| title | Two-loop BSM contributions to Higgs pair production in the aligned THDM |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2508.11539 |