Unveiling New Phases of the Standard Model Higgs Potential
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arXiv
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866912142079295488 |
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| author | Goertz, Florian Pastor-Gutiérrez, Álvaro |
| author_facet | Goertz, Florian Pastor-Gutiérrez, Álvaro |
| contents | We present evidence for new phases of the Standard Model Higgs potential. We study the Standard Model physical trajectory accounting for the Higgs curvature mass with the mass-dependent functional renormalisation group. New unstable and non-trivially stable phases are found at energies above the Planck scale and below the Abelian Landau pole. While the first aggravates the well-known metastable phase and threatens the viability of the Standard Model extrapolated to arbitrary scales, the latter can provide a well-defined ultraviolet completion. We investigate the phase diagram as a function of the top quark pole mass and study the effect of new physics through a scalar singlet portal coupling. The new non-trivial phase appears below the Planck scale in extensions of the Standard Model seeking stable trajectories. These findings have a significant impact on existing model building. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2308_13594 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Unveiling New Phases of the Standard Model Higgs Potential Goertz, Florian Pastor-Gutiérrez, Álvaro High Energy Physics - Phenomenology High Energy Physics - Theory We present evidence for new phases of the Standard Model Higgs potential. We study the Standard Model physical trajectory accounting for the Higgs curvature mass with the mass-dependent functional renormalisation group. New unstable and non-trivially stable phases are found at energies above the Planck scale and below the Abelian Landau pole. While the first aggravates the well-known metastable phase and threatens the viability of the Standard Model extrapolated to arbitrary scales, the latter can provide a well-defined ultraviolet completion. We investigate the phase diagram as a function of the top quark pole mass and study the effect of new physics through a scalar singlet portal coupling. The new non-trivial phase appears below the Planck scale in extensions of the Standard Model seeking stable trajectories. These findings have a significant impact on existing model building. |
| title | Unveiling New Phases of the Standard Model Higgs Potential |
| topic | High Energy Physics - Phenomenology High Energy Physics - Theory |
| url | https://arxiv.org/abs/2308.13594 |