EFT, decoupling, Higgs boson mixing, and higher dimensional operators
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arXiv
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2023
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| _version_ | 1866909143938367488 |
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| author | Banerjee, Upalaparna Chakrabortty, Joydeep Englert, Christoph Naskar, Wrishik Rahaman, Shakeel Ur Spannowsky, Michael |
| author_facet | Banerjee, Upalaparna Chakrabortty, Joydeep Englert, Christoph Naskar, Wrishik Rahaman, Shakeel Ur Spannowsky, Michael |
| contents | The effective field theory (EFT) framework is a precise approximation procedure when the inherent assumptions of a large-scale separation between the Standard Model (SM) and new interactions alongside perturbativity are realised. Constraints from available data might not automatically guarantee these circumstances when contrasted with UV scenarios that the EFT analysis wishes to inform. From an EFT perspective, achieving sufficient precision in navigating the alignment or decoupling limits beyond the SM scenarios can necessitate moving beyond the SM's leading, dimension six EFT deformation. Using the example of Higgs boson mixing, we demonstrated the importance of higher-dimensional terms in the EFT expansion. We analyse the relevance of virtual EFT corrections and dimension eight contributions for well-determined electroweak precision observables. We find that when moving away from the decoupling limit, the relevance of additional terms in the EFT expansion quickly becomes relevant. This demonstrates the necessity to move beyond dimension six interactions for any scenario that contains Higgs boson mixing. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2303_05224 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | EFT, decoupling, Higgs boson mixing, and higher dimensional operators Banerjee, Upalaparna Chakrabortty, Joydeep Englert, Christoph Naskar, Wrishik Rahaman, Shakeel Ur Spannowsky, Michael High Energy Physics - Phenomenology High Energy Physics - Experiment The effective field theory (EFT) framework is a precise approximation procedure when the inherent assumptions of a large-scale separation between the Standard Model (SM) and new interactions alongside perturbativity are realised. Constraints from available data might not automatically guarantee these circumstances when contrasted with UV scenarios that the EFT analysis wishes to inform. From an EFT perspective, achieving sufficient precision in navigating the alignment or decoupling limits beyond the SM scenarios can necessitate moving beyond the SM's leading, dimension six EFT deformation. Using the example of Higgs boson mixing, we demonstrated the importance of higher-dimensional terms in the EFT expansion. We analyse the relevance of virtual EFT corrections and dimension eight contributions for well-determined electroweak precision observables. We find that when moving away from the decoupling limit, the relevance of additional terms in the EFT expansion quickly becomes relevant. This demonstrates the necessity to move beyond dimension six interactions for any scenario that contains Higgs boson mixing. |
| title | EFT, decoupling, Higgs boson mixing, and higher dimensional operators |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2303.05224 |