Long-lived heavy neutral leptons with a displaced shower signature at CMS
Abstract We study the LHC discovery potential in the search for heavy neutral leptons (HNL) with a new signature: a displaced shower in the CMS muon detector, giving rise to a large cluster of hits forming a displaced shower. A new Delphes module is used to model the CMS detector response for such d...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-02-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP02(2023)011 |
| _version_ | 1797779162615775232 |
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| author | Giovanna Cottin Juan Carlos Helo Martin Hirsch Cristián Peña Christina Wang Si Xie |
| author_facet | Giovanna Cottin Juan Carlos Helo Martin Hirsch Cristián Peña Christina Wang Si Xie |
| author_sort | Giovanna Cottin |
| collection | DOAJ |
| description | Abstract We study the LHC discovery potential in the search for heavy neutral leptons (HNL) with a new signature: a displaced shower in the CMS muon detector, giving rise to a large cluster of hits forming a displaced shower. A new Delphes module is used to model the CMS detector response for such displaced decays. We reinterpret a dedicated CMS search for neutral long-lived particles decaying in the CMS muon endcap detectors for the minimal HNL scenario. We demonstrate that this new strategy is particularly sensitive to active-sterile mixings with τ leptons, due to hadronic τ decays. HNL masses between ~ 1–6 GeV can be accessed for mixings as low as |V τN |2~10−7, probing unique regions of parameter space in the τ sector. |
| first_indexed | 2024-03-12T23:26:40Z |
| format | Article |
| id | doaj.art-efb205399ae04bfda4b220350c33348a |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-03-12T23:26:40Z |
| publishDate | 2023-02-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-efb205399ae04bfda4b220350c33348a2023-07-16T11:06:33ZengSpringerOpenJournal of High Energy Physics1029-84792023-02-012023211610.1007/JHEP02(2023)011Long-lived heavy neutral leptons with a displaced shower signature at CMSGiovanna Cottin0Juan Carlos Helo1Martin Hirsch2Cristián Peña3Christina Wang4Si Xie5Departamento de Ciencias, Facultad de Artes Liberales, Universidad Adolfo IbáñezDepartamento de Física, Facultad de Ciencias, Universidad de La SerenaAHEP Group, Instituto de Física Corpuscular — CSIC/Universitat de ValènciaFermi National Accelerator LaboratoryCalifornia Institute of TechnologyFermi National Accelerator LaboratoryAbstract We study the LHC discovery potential in the search for heavy neutral leptons (HNL) with a new signature: a displaced shower in the CMS muon detector, giving rise to a large cluster of hits forming a displaced shower. A new Delphes module is used to model the CMS detector response for such displaced decays. We reinterpret a dedicated CMS search for neutral long-lived particles decaying in the CMS muon endcap detectors for the minimal HNL scenario. We demonstrate that this new strategy is particularly sensitive to active-sterile mixings with τ leptons, due to hadronic τ decays. HNL masses between ~ 1–6 GeV can be accessed for mixings as low as |V τN |2~10−7, probing unique regions of parameter space in the τ sector.https://doi.org/10.1007/JHEP02(2023)011New Light ParticlesSterile or Heavy Neutrinos |
| spellingShingle | Giovanna Cottin Juan Carlos Helo Martin Hirsch Cristián Peña Christina Wang Si Xie Long-lived heavy neutral leptons with a displaced shower signature at CMS Journal of High Energy Physics New Light Particles Sterile or Heavy Neutrinos |
| title | Long-lived heavy neutral leptons with a displaced shower signature at CMS |
| title_full | Long-lived heavy neutral leptons with a displaced shower signature at CMS |
| title_fullStr | Long-lived heavy neutral leptons with a displaced shower signature at CMS |
| title_full_unstemmed | Long-lived heavy neutral leptons with a displaced shower signature at CMS |
| title_short | Long-lived heavy neutral leptons with a displaced shower signature at CMS |
| title_sort | long lived heavy neutral leptons with a displaced shower signature at cms |
| topic | New Light Particles Sterile or Heavy Neutrinos |
| url | https://doi.org/10.1007/JHEP02(2023)011 |
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