Reconstructing a Heavy Neutral Lepton at the LHC
Abstract Heavy lepton singlets N slightly mixed with a standard neutrino ν ℓ are usually searched for at the LHC in the trilepton plus p T miss $$ {p}_{\textrm{T}}^{\textrm{miss}} $$ channel: pp → W + → ℓ + N with N → ℓ − W + → ℓ − ℓ′ + ν. We show that, although the longitudinal momentum of the fina...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2025-06-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP06(2025)129 |
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| author | Pablo de la Torre Manuel Masip Fuensanta Vilches |
| author_facet | Pablo de la Torre Manuel Masip Fuensanta Vilches |
| author_sort | Pablo de la Torre |
| collection | DOAJ |
| description | Abstract Heavy lepton singlets N slightly mixed with a standard neutrino ν ℓ are usually searched for at the LHC in the trilepton plus p T miss $$ {p}_{\textrm{T}}^{\textrm{miss}} $$ channel: pp → W + → ℓ + N with N → ℓ − W + → ℓ − ℓ′ + 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 improve the current collider bounds on the mixing |V ℓN |2 for any mass m N ≥ M W . |
| format | Article |
| id | doaj-art-a7d74e7617324df8b8422a5494cffdbe |
| institution | Kabale University |
| issn | 1029-8479 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-a7d74e7617324df8b8422a5494cffdbe2025-08-20T03:45:44ZengSpringerOpenJournal of High Energy Physics1029-84792025-06-012025611310.1007/JHEP06(2025)129Reconstructing a Heavy Neutral Lepton at the LHCPablo de la Torre0Manuel Masip1Fuensanta Vilches2Departamento de Física Teórica y del Cosmos, Universidad de GranadaDepartamento de Física Teórica y del Cosmos, Universidad de GranadaDepartamento de Física Teórica y del Cosmos, Universidad de GranadaAbstract Heavy lepton singlets N slightly mixed with a standard neutrino ν ℓ are usually searched for at the LHC in the trilepton plus p T miss $$ {p}_{\textrm{T}}^{\textrm{miss}} $$ channel: pp → W + → ℓ + N with N → ℓ − W + → ℓ − ℓ′ + 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 improve the current collider bounds on the mixing |V ℓN |2 for any mass m N ≥ M W .https://doi.org/10.1007/JHEP06(2025)129Specific BSM PhenomenologyVector-Like FermionsElectroweak Precision Physics |
| spellingShingle | Pablo de la Torre Manuel Masip Fuensanta Vilches Reconstructing a Heavy Neutral Lepton at the LHC Journal of High Energy Physics Specific BSM Phenomenology Vector-Like Fermions Electroweak Precision Physics |
| title | Reconstructing a Heavy Neutral Lepton at the LHC |
| title_full | Reconstructing a Heavy Neutral Lepton at the LHC |
| title_fullStr | Reconstructing a Heavy Neutral Lepton at the LHC |
| title_full_unstemmed | Reconstructing a Heavy Neutral Lepton at the LHC |
| title_short | Reconstructing a Heavy Neutral Lepton at the LHC |
| title_sort | reconstructing a heavy neutral lepton at the lhc |
| topic | Specific BSM Phenomenology Vector-Like Fermions Electroweak Precision Physics |
| url | https://doi.org/10.1007/JHEP06(2025)129 |
| work_keys_str_mv | AT pablodelatorre reconstructingaheavyneutralleptonatthelhc AT manuelmasip reconstructingaheavyneutralleptonatthelhc AT fuensantavilches reconstructingaheavyneutralleptonatthelhc |