Reconstructing a Heavy Neutral Lepton at the LHC
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arXiv
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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866908408242765824 |
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| author | de la Torre, Pablo Masip, Manuel Vilches, Fuensanta |
| author_facet | de la Torre, Pablo Masip, Manuel Vilches, Fuensanta |
| contents | Heavy lepton singlets $N$ slightly mixed with a standard neutrino $ν_\ell$ are usually searched for at the LHC in the trilepton plus $p_{\rm T}^{\rm miss}$ channel: $pp \to W^+ \to \ell^+ N$ with $N\to \ell^- W^+ \to \ell^- \ell'^+ ν$. We show that, although the longitudinal momentum of the final $ν$ escapes detection, the mass of the heavy lepton can be reconstructed. While this possibility has not been considered in recent LHC searches, we find that the search for a mass peak could systematically improve the current collider bounds on the mixing $|V_{\ell N}|^2$ for any mass $m_N\ge M_W$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_04340 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Reconstructing a Heavy Neutral Lepton at the LHC de la Torre, Pablo Masip, Manuel Vilches, Fuensanta High Energy Physics - Phenomenology High Energy Physics - Experiment Heavy lepton singlets $N$ slightly mixed with a standard neutrino $ν_\ell$ are usually searched for at the LHC in the trilepton plus $p_{\rm T}^{\rm miss}$ channel: $pp \to W^+ \to \ell^+ N$ with $N\to \ell^- W^+ \to \ell^- \ell'^+ ν$. We show that, although the longitudinal momentum of the final $ν$ escapes detection, the mass of the heavy lepton can be reconstructed. While this possibility has not been considered in recent LHC searches, we find that the search for a mass peak could systematically improve the current collider bounds on the mixing $|V_{\ell N}|^2$ for any mass $m_N\ge M_W$. |
| title | Reconstructing a Heavy Neutral Lepton at the LHC |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2407.04340 |