Search for R-parity-violating supersymmetric particles in multi-jet final states produced in p–p collisions at s=13 TeV using the ATLAS detector at the LHC

• Autor(a) principal: Santos, S. P. Amor dos
• Data de Publicação: 2018
• Outros Autores: Fiolhais, M. C. N., Galhardo, B., Veloso, F., Wolters, H., ATLAS Collaboration
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10316/107976; https://doi.org/10.1016/j.physletb.2018.08.021

Results of a search for gluino pair production with subsequent R-parity-violating decays to quarks are presented. This search uses 36.1fb−1of data collected by the ATLAS detector in proton–proton collisions with a centre-of-mass energy of √s=13TeV at the LHC. The analysis is performed using requirements on the number of jets and the number of jets tagged as containing a b-hadron as well as a topological observable formed by the scalar sum of masses of large-radius jets in the event. No significant excess above the expected Standard Model background is observed. Limits are set on the production of gluinos in models with the R-parity-violating decays of either the gluino itself (direct decay) or the neutralino produced in the R-parity-conserving gluino decay (cascade decay). In the gluino cascade decay model, gluino masses below 1850GeV are excluded for 1000GeV neutralino mass. For the gluino direct decay model, the 95% confidence level upper limit on the cross section times branching ratio varies between 0.80 fbat m˜ g=900GeV and 0.011fbat m˜ g=1800GeV.