Precision tests of third-generation four-quark operators: $gg \to h$ and $h \to γγ$
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| Format: | Preprint |
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2025
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| _version_ | 1866913962430300160 |
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| author | Haisch, Ulrich Niggetiedt, Marco |
| author_facet | Haisch, Ulrich Niggetiedt, Marco |
| contents | We compute the two-loop contributions to Higgs production via gluon-gluon fusion ($gg \to h$) and Higgs decay into two photons ($h \to γγ$), arising from third-generation four-quark operators in the Standard Model effective field theory (SMEFT). Our analysis is performed in the broken phase of the theory, retaining the full dependence on the Higgs and heavy-quark masses. This includes both finite matching corrections and logarithmic effects stemming from the renormalization group evolution within the SMEFT. As a byproduct, new two-loop anomalous dimensions in the SMEFT are obtained. We also briefly discuss the phenomenological implications of our two-loop calculations. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2507_20803 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Precision tests of third-generation four-quark operators: $gg \to h$ and $h \to γγ$ Haisch, Ulrich Niggetiedt, Marco High Energy Physics - Phenomenology High Energy Physics - Experiment We compute the two-loop contributions to Higgs production via gluon-gluon fusion ($gg \to h$) and Higgs decay into two photons ($h \to γγ$), arising from third-generation four-quark operators in the Standard Model effective field theory (SMEFT). Our analysis is performed in the broken phase of the theory, retaining the full dependence on the Higgs and heavy-quark masses. This includes both finite matching corrections and logarithmic effects stemming from the renormalization group evolution within the SMEFT. As a byproduct, new two-loop anomalous dimensions in the SMEFT are obtained. We also briefly discuss the phenomenological implications of our two-loop calculations. |
| title | Precision tests of third-generation four-quark operators: $gg \to h$ and $h \to γγ$ |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2507.20803 |