Long-lived stau, sneutrino dark matter and right-slepton spectrum
Abstract The minimal supersymmetric (SUSY) standard model (MSSM) augmented by right chiral sneutrinos may lead to one such sneutrino serving as the lightest supersymmetric particle and a non-thermal dark matter candidate, especially if neutrinos have Dirac masses only. In such cases, if the lightest...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2018-09-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1007/JHEP09(2018)143 |
| _version_ | 1828519158142205952 |
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| author | Shankha Banerjee Geneviève Bélanger Avirup Ghosh Biswarup Mukhopadhyaya |
| author_facet | Shankha Banerjee Geneviève Bélanger Avirup Ghosh Biswarup Mukhopadhyaya |
| author_sort | Shankha Banerjee |
| collection | DOAJ |
| description | Abstract The minimal supersymmetric (SUSY) standard model (MSSM) augmented by right chiral sneutrinos may lead to one such sneutrino serving as the lightest supersymmetric particle and a non-thermal dark matter candidate, especially if neutrinos have Dirac masses only. In such cases, if the lightest MSSM particle is a stau, the signal of SUSY at the LHC consists in stable charged tracks which are distinguishable from backgrounds through their time delay between the inner tracker and the muon chamber. We show how to determine in such scenarios the mass hierarchy between the lightest neutralino and right sleptons of the first two families. The techniques of neutralino reconstruction, developed in earlier works, are combined with the endpoint of the variable M T 2 in smuon (selectron) decays for this purpose. We show that one can thus determine the mass hierarchy for smuons (selectrons) and neutralinos up to 1 TeV, to the level of 5-10%. |
| first_indexed | 2024-12-11T19:08:25Z |
| format | Article |
| id | doaj.art-e39bc740eaa7426783c13fb2db2196be |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-11T19:08:25Z |
| publishDate | 2018-09-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-e39bc740eaa7426783c13fb2db2196be2022-12-22T00:53:51ZengSpringerOpenJournal of High Energy Physics1029-84792018-09-012018912310.1007/JHEP09(2018)143Long-lived stau, sneutrino dark matter and right-slepton spectrumShankha Banerjee0Geneviève Bélanger1Avirup Ghosh2Biswarup Mukhopadhyaya3Institute for Particle Physics Phenomenology, Department of Physics, Durham UniversityLaboratoire d’Annecy-le-Vieux de Physique Théorique, Université Grenoble Alpes, USMB, CNRSRegional Centre for Accelerator-based Particle Physics, Harish-Chandra Research Institute, HBNIRegional Centre for Accelerator-based Particle Physics, Harish-Chandra Research Institute, HBNIAbstract The minimal supersymmetric (SUSY) standard model (MSSM) augmented by right chiral sneutrinos may lead to one such sneutrino serving as the lightest supersymmetric particle and a non-thermal dark matter candidate, especially if neutrinos have Dirac masses only. In such cases, if the lightest MSSM particle is a stau, the signal of SUSY at the LHC consists in stable charged tracks which are distinguishable from backgrounds through their time delay between the inner tracker and the muon chamber. We show how to determine in such scenarios the mass hierarchy between the lightest neutralino and right sleptons of the first two families. The techniques of neutralino reconstruction, developed in earlier works, are combined with the endpoint of the variable M T 2 in smuon (selectron) decays for this purpose. We show that one can thus determine the mass hierarchy for smuons (selectrons) and neutralinos up to 1 TeV, to the level of 5-10%.http://link.springer.com/article/10.1007/JHEP09(2018)143Supersymmetry Phenomenology |
| spellingShingle | Shankha Banerjee Geneviève Bélanger Avirup Ghosh Biswarup Mukhopadhyaya Long-lived stau, sneutrino dark matter and right-slepton spectrum Journal of High Energy Physics Supersymmetry Phenomenology |
| title | Long-lived stau, sneutrino dark matter and right-slepton spectrum |
| title_full | Long-lived stau, sneutrino dark matter and right-slepton spectrum |
| title_fullStr | Long-lived stau, sneutrino dark matter and right-slepton spectrum |
| title_full_unstemmed | Long-lived stau, sneutrino dark matter and right-slepton spectrum |
| title_short | Long-lived stau, sneutrino dark matter and right-slepton spectrum |
| title_sort | long lived stau sneutrino dark matter and right slepton spectrum |
| topic | Supersymmetry Phenomenology |
| url | http://link.springer.com/article/10.1007/JHEP09(2018)143 |
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