Searching for stop LSP at the LHC
| Autor: | Kpatcha, Essodjolo, Lara, Iñaki, López-Fogliani, Daniel E., Muñoz, Carlos, Nagata, Natsumi, Otono, Hidetoshi |
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| Přispěvatelé: | HEP, INSPIRE |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
R parity
flavor lepton [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex] LSP CMS decay: length minimal supersymmetric standard model mu-problem ATLAS [PHYS.HPHE] Physics [physics]/High Energy Physics - Phenomenology [hep-ph] CERN LHC Coll neutrino: right-handed particle: long-lived sparticle |
| Popis: | We analyze relevant signals expected at the LHC for a stop as the lightest supersymmetric particle (LSP). The discussion is carried out in the framework of the $\mu\nu$SSM, where the presence of $R$-parity violating couplings involving right-handed neutrinos solves the $\mu$-problem and reproduces neutrino data. The stops are pair produced at the LHC, decaying with displaced vertices to a lepton and a bottom quark or a neutrino and a top quark. We compare the predictions of this scenario with ATLAS and CMS searches for long-lived particles. To analyze the parameter space we sample the $\mu\nu$SSM for a stop LSP using a likelihood data-driven method, and paying special attention to reproduce the current experimental data on neutrino and Higgs physics, as well as flavor observables. Our results translate into a lower limit on the mass of the left (right) stop LSP of 1068 GeV (1341 GeV), corresponding to a decay length of 1.86 mm (6.61 mm). |
| Databáze: | OpenAIRE |
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