Does the Electron EDM Preclude Electroweak Baryogenesis ?
Fuente:
arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866913153452867584 |
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| author | Li, Yuan-Zhen Ramsey-Musolf, Michael J. Yu, Jiang-Hao |
| author_facet | Li, Yuan-Zhen Ramsey-Musolf, Michael J. Yu, Jiang-Hao |
| contents | Electroweak baryogenesis (EWBG) constitutes a theoretically compelling and experimentally testable mechanism for explaining the origin of the baryon asymmetry of the universe (BAU). New results for the electric dipole moment (EDM) of the electron place significant constraints on the beyond Standard Model CP-violation needed for successful EWBG. Using a specific model illustration, we show how new developments in EWBG quantum transport theory that include CP-violating sources first order in gradients imply more relaxed EDM constraints -- and thereby greater EWBG viability -- than implied by previous approximation formulations. We also illustrate how these developments enable a more realistic treatment of CP-conserving interactions that can also have a decisive impact on the predicted BAU. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_19197 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Does the Electron EDM Preclude Electroweak Baryogenesis ? Li, Yuan-Zhen Ramsey-Musolf, Michael J. Yu, Jiang-Hao High Energy Physics - Phenomenology High Energy Physics - Experiment Nuclear Experiment Nuclear Theory Electroweak baryogenesis (EWBG) constitutes a theoretically compelling and experimentally testable mechanism for explaining the origin of the baryon asymmetry of the universe (BAU). New results for the electric dipole moment (EDM) of the electron place significant constraints on the beyond Standard Model CP-violation needed for successful EWBG. Using a specific model illustration, we show how new developments in EWBG quantum transport theory that include CP-violating sources first order in gradients imply more relaxed EDM constraints -- and thereby greater EWBG viability -- than implied by previous approximation formulations. We also illustrate how these developments enable a more realistic treatment of CP-conserving interactions that can also have a decisive impact on the predicted BAU. |
| title | Does the Electron EDM Preclude Electroweak Baryogenesis ? |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment Nuclear Experiment Nuclear Theory |
| url | https://arxiv.org/abs/2404.19197 |