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| Format: | Preprint |
| Publié: |
2024
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| Accès en ligne: | https://arxiv.org/abs/2405.09650 |
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| _version_ | 1866914925344980992 |
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| author | Husek, Tomáš |
| author_facet | Husek, Tomáš |
| contents | This work aims to review several aspects of the current status of the rare $π^0\to e^+e^-$ decay. A particular emphasis is made on radiative corrections and detailed interpretation of related quantities, some numbers appearing in the literature are updated, and the connection with the Dalitz decay, $π^0\to e^+e^-γ$, is discussed. This comes timely as it is aligned with an announcement of a preliminary result of a new branching-ratio measurement done by the NA62 Collaboration, which brings new light into an earlier-reported discrepancy between the Standard Model prediction and the (until-recently latest) precise KTeV result. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_09650 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Neutral-pion decay into an electron-positron pair: A review and update Husek, Tomáš High Energy Physics - Phenomenology High Energy Physics - Experiment This work aims to review several aspects of the current status of the rare $π^0\to e^+e^-$ decay. A particular emphasis is made on radiative corrections and detailed interpretation of related quantities, some numbers appearing in the literature are updated, and the connection with the Dalitz decay, $π^0\to e^+e^-γ$, is discussed. This comes timely as it is aligned with an announcement of a preliminary result of a new branching-ratio measurement done by the NA62 Collaboration, which brings new light into an earlier-reported discrepancy between the Standard Model prediction and the (until-recently latest) precise KTeV result. |
| title | Neutral-pion decay into an electron-positron pair: A review and update |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2405.09650 |