Hot news on the phase-structure of the SMEFT
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arXiv
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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866918102529212416 |
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| author | Chala, Mikael Fiore, Maria Cristina Gil, Luis |
| author_facet | Chala, Mikael Fiore, Maria Cristina Gil, Luis |
| contents | We perform dimensional reduction of the electroweak sector of the dimension-six SMEFT to order $g^4$ in coupling constants $g$. This analysis includes one-loop contributions to kinetic terms and quartic couplings; as well as two-loop contributions, where operators such as four-fermion interactions first appear, to squared mass terms. Using lattice data, we also provide evidence that, in contrast with previous statements in the literature, the SMEFT may undergo a first-order phase transition even for null $|ϕ|^6$ at zero temperature, where $ϕ$ is the Higgs doublet. This opens the door to entirely unexplored directions in model building. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_16905 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Hot news on the phase-structure of the SMEFT Chala, Mikael Fiore, Maria Cristina Gil, Luis High Energy Physics - Phenomenology We perform dimensional reduction of the electroweak sector of the dimension-six SMEFT to order $g^4$ in coupling constants $g$. This analysis includes one-loop contributions to kinetic terms and quartic couplings; as well as two-loop contributions, where operators such as four-fermion interactions first appear, to squared mass terms. Using lattice data, we also provide evidence that, in contrast with previous statements in the literature, the SMEFT may undergo a first-order phase transition even for null $|ϕ|^6$ at zero temperature, where $ϕ$ is the Higgs doublet. This opens the door to entirely unexplored directions in model building. |
| title | Hot news on the phase-structure of the SMEFT |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2507.16905 |