Irreducible Bhabha background in the detection of muonium-antimuonium conversion
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_ | 1866911240224243712 |
|---|---|
| author | Ghosh, Mitrajyoti Liguori, Kevin Okui, Takemichi Tobioka, Kohsaku |
| author_facet | Ghosh, Mitrajyoti Liguori, Kevin Okui, Takemichi Tobioka, Kohsaku |
| contents | Experiments such as MACS and the proposed MACE study muonium-antimuonium conversion by the energies of the final-state $e^\pm$. The $e^+$ and $e^-$ from an antimuonium decay tend to be non-relativistic and relativistic, respectively, and vice versa for muonium. However, these $e^\pm$ can exchange their energies by hard Bhabha scattering, causing muonium to fake an antimuonium decay signal. We compute the rate for this background and find that, while negligible for MACE, it will become larger than the signal for conversion probabilities less than $10^{-18}$. Measuring the helicity of the $e^-$ will reduce this to $10^{-22}$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_25828 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Irreducible Bhabha background in the detection of muonium-antimuonium conversion Ghosh, Mitrajyoti Liguori, Kevin Okui, Takemichi Tobioka, Kohsaku High Energy Physics - Phenomenology High Energy Physics - Experiment Experiments such as MACS and the proposed MACE study muonium-antimuonium conversion by the energies of the final-state $e^\pm$. The $e^+$ and $e^-$ from an antimuonium decay tend to be non-relativistic and relativistic, respectively, and vice versa for muonium. However, these $e^\pm$ can exchange their energies by hard Bhabha scattering, causing muonium to fake an antimuonium decay signal. We compute the rate for this background and find that, while negligible for MACE, it will become larger than the signal for conversion probabilities less than $10^{-18}$. Measuring the helicity of the $e^-$ will reduce this to $10^{-22}$. |
| title | Irreducible Bhabha background in the detection of muonium-antimuonium conversion |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2510.25828 |