Theoretical Uncertainties in First-Order Electroweak Phase Transitions
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arXiv
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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866916662124478464 |
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| author | Zhu, Yongzhao Liu, Jie Qin, Renhui Bian, Ligong |
| author_facet | Zhu, Yongzhao Liu, Jie Qin, Renhui Bian, Ligong |
| contents | We systematically investigate theoretical uncertainties in perturbative analyses of first-order electroweak phase transitions (EWPT). Utilizing the Standard Model Effective Field Theory (SMEFT) framework, we quantify the gauge dependence, renormalization scheme, and scale dependences in predicting phase-transition parameters across both zero and finite chemical potential regimes. Our key findings reveal that: 1) the gauge-parameter dependence and the chemical potential are subdominants, and 2) Baryon number preservation criteria and phase transition observables exhibit pronounced sensitivity to the renormalization scale in the ${\overline{\rm MS}}$ scheme. Comparative analyses with the on-shell scheme demonstrate that within strongly first-order EWPT parameter spaces, the ${\overline{\rm MS}}$ scheme predicts enhanced phase transition strengths and prolonged transition durations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_19566 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Theoretical Uncertainties in First-Order Electroweak Phase Transitions Zhu, Yongzhao Liu, Jie Qin, Renhui Bian, Ligong High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics High Energy Physics - Theory We systematically investigate theoretical uncertainties in perturbative analyses of first-order electroweak phase transitions (EWPT). Utilizing the Standard Model Effective Field Theory (SMEFT) framework, we quantify the gauge dependence, renormalization scheme, and scale dependences in predicting phase-transition parameters across both zero and finite chemical potential regimes. Our key findings reveal that: 1) the gauge-parameter dependence and the chemical potential are subdominants, and 2) Baryon number preservation criteria and phase transition observables exhibit pronounced sensitivity to the renormalization scale in the ${\overline{\rm MS}}$ scheme. Comparative analyses with the on-shell scheme demonstrate that within strongly first-order EWPT parameter spaces, the ${\overline{\rm MS}}$ scheme predicts enhanced phase transition strengths and prolonged transition durations. |
| title | Theoretical Uncertainties in First-Order Electroweak Phase Transitions |
| topic | High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics High Energy Physics - Theory |
| url | https://arxiv.org/abs/2503.19566 |