Search for heavy neutral leptons in $π^+$ decays to positrons
Fuente:
arXiv
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| Formato: | Preprint |
| Publicado: |
2025
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866917251867738112 |
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| author | NA62 Collaboration |
| author_facet | NA62 Collaboration |
| contents | A search for heavy neutral lepton ($N$) production in $π^+\to e^+ N$ in-flight decays using data collected by the NA62 experiment at CERN in 2017-2024 is reported. Upper limits for the extended neutrino mixing matrix element $|U_{e4}|^2$ are established at the level of $10^{-8}$ for heavy neutral leptons with mass in the range 95-126 $MeV/c^2$ and lifetime exceeding 50 ns. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_07345 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Search for heavy neutral leptons in $π^+$ decays to positrons NA62 Collaboration High Energy Physics - Experiment A search for heavy neutral lepton ($N$) production in $π^+\to e^+ N$ in-flight decays using data collected by the NA62 experiment at CERN in 2017-2024 is reported. Upper limits for the extended neutrino mixing matrix element $|U_{e4}|^2$ are established at the level of $10^{-8}$ for heavy neutral leptons with mass in the range 95-126 $MeV/c^2$ and lifetime exceeding 50 ns. |
| title | Search for heavy neutral leptons in $π^+$ decays to positrons |
| topic | High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2507.07345 |