Searching for stop LSP at the LHC - Archive ouverte HAL
Article Dans Une Revue Eur.Phys.J.C Année : 2022

Searching for stop LSP at the LHC

Iñaki Lara
  • Fonction : Auteur
Daniel E. López-Fogliani
  • Fonction : Auteur
Carlos Muñoz
  • Fonction : Auteur
Natsumi Nagata
  • Fonction : Auteur
Hidetoshi Otono
  • Fonction : Auteur

Résumé

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).

Dates et versions

hal-03626429 , version 1 (31-03-2022)

Identifiants

Citer

Essodjolo Kpatcha, Iñaki Lara, Daniel E. López-Fogliani, Carlos Muñoz, Natsumi Nagata, et al.. Searching for stop LSP at the LHC. Eur.Phys.J.C, 2022, 82 (3), pp.261. ⟨10.1140/epjc/s10052-022-10216-0⟩. ⟨hal-03626429⟩
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