Título:
Bounding the dimension-5 seesaw portal with non-pointing photon searches
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Autor:
Duarte, Lucía
Jones-Pérez, J.
Manrique-Chavil, C.
Jones-Pérez, J.
Manrique-Chavil, C.
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Tipo de documento:
Preprint
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Palabras clave:
High Energy Physics - Phenomenology
High Energy Physics - Experiment
High Energy Physics - Experiment
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Año de publicación:
2023
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Resumen:
The addition of d = 5 operators to the Seesaw model leads to the Dimension-5 Seesaw Portal. Here, two new operators provide interactions for the heavy sterile neutrinos. In particular, the Higgs boson can have a large branching ratio into two heavy neutrinos, meaning that these states can be searched for at the LHC. Moreover,
the heavy neutrinos can now decay dominantly into light neutrinos and photons. If the heavy neutrinos are long-lived, then searches for delayed, non-pointing photons can constrain the model. In this work, we carry out a detailed recast of an ATLAS search for such displaced photons, triggered by a charged lepton produced in association to the Higgs, placing bounds on the branching ratio for Higgs decay into two heavy neutrinos as low as 2%.
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High Energy Physics - Phenomenology, arXiv:2311.17989, nov 2023.
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Citación:
Duarte, L, Jones-Pérez, J y Manrique-Chavil, C. "Bounding the dimension-5 seesaw portal with non-pointing photon searches" [Preprint]. High Energy Physics - Phenomenology. 2023 arXiv:2311.17989, nov 2023. 27 h. DOI: 10.48550/arXiv.2311.17989
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https://hdl.handle.net/20.500.12008/42273
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Licencia Creative Commons Atribución (CC - By 4.0)
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| Ficheros | Descripción | Tamaño | Formato | ||
|---|---|---|---|---|---|
| 10.48550.arXiv.2311.17989.pdf | — | 1.58 MB | Adobe PDF |