Heavy neutral leptons and top quarks in effective field theory
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866915432944893952 |
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| author | Beltrán, Rebeca Cottin, Giovanna Günther, Julian Hirsch, Martin Titov, Arsenii Wang, Zeren Simon |
| author_facet | Beltrán, Rebeca Cottin, Giovanna Günther, Julian Hirsch, Martin Titov, Arsenii Wang, Zeren Simon |
| contents | We study the phenomenology of heavy neutral leptons (HNLs) at the LHC in effective field theory, concentrating on $d=6$ operators with top quarks. Depending on the operator choice and HNL mass, the HNLs will be produced either from proton-proton collisions in association with a single top, or via non-standard decays of top quarks. For long-lived HNLs we estimate the sensitivity reach of different detectors to various operators with top quarks and the HNLs for the high-luminosity phase of the LHC. For certain operators, ATLAS and some far detectors (MATHUSLA and ANUBIS) will be able to probe the associated new-physics scale as large as 12 TeV and 4.5 TeV, respectively, covering complementary HNL-mass ranges. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_09065 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Heavy neutral leptons and top quarks in effective field theory Beltrán, Rebeca Cottin, Giovanna Günther, Julian Hirsch, Martin Titov, Arsenii Wang, Zeren Simon High Energy Physics - Phenomenology We study the phenomenology of heavy neutral leptons (HNLs) at the LHC in effective field theory, concentrating on $d=6$ operators with top quarks. Depending on the operator choice and HNL mass, the HNLs will be produced either from proton-proton collisions in association with a single top, or via non-standard decays of top quarks. For long-lived HNLs we estimate the sensitivity reach of different detectors to various operators with top quarks and the HNLs for the high-luminosity phase of the LHC. For certain operators, ATLAS and some far detectors (MATHUSLA and ANUBIS) will be able to probe the associated new-physics scale as large as 12 TeV and 4.5 TeV, respectively, covering complementary HNL-mass ranges. |
| title | Heavy neutral leptons and top quarks in effective field theory |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2501.09065 |