Importance of Loop Effects in Probing Lepton Number Violation
Fuente:
arXiv
Enregistré dans:
| Auteurs principaux: | , , , |
|---|---|
| Format: | Preprint |
| Publié: |
2025
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1866908458551345152 |
|---|---|
| author | Gráf, Lukáš Hati, Chandan Martín-Galán, Ana Scholer, Oliver |
| author_facet | Gráf, Lukáš Hati, Chandan Martín-Galán, Ana Scholer, Oliver |
| contents | The discovery of the lepton number violation would be a smoking gun signal for physics beyond the Standard Model, and its most sensitive probe is the search for neutrinoless double beta decay ($0νββ$). Working in the framework of the Standard Model Effective Field Theory (SMEFT), we show that one-loop effects can remarkably improve the tree-level bounds on the new-physics scales for several dimension-7 operators. Using ultraviolet model examples, we then showcase the competition among $0νββ$ contributions induced by dimension-7 and loop-level dimension-5 SMEFT operators. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_00081 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Importance of Loop Effects in Probing Lepton Number Violation Gráf, Lukáš Hati, Chandan Martín-Galán, Ana Scholer, Oliver High Energy Physics - Phenomenology The discovery of the lepton number violation would be a smoking gun signal for physics beyond the Standard Model, and its most sensitive probe is the search for neutrinoless double beta decay ($0νββ$). Working in the framework of the Standard Model Effective Field Theory (SMEFT), we show that one-loop effects can remarkably improve the tree-level bounds on the new-physics scales for several dimension-7 operators. Using ultraviolet model examples, we then showcase the competition among $0νββ$ contributions induced by dimension-7 and loop-level dimension-5 SMEFT operators. |
| title | Importance of Loop Effects in Probing Lepton Number Violation |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2504.00081 |