Search for squarks and gluinos using final states with jets and missing transverse momentum with the ATLAS detector in root s=7 TeV proton-proton collisions

• Autor(a) principal: Onofre, A.
• Data de Publicação: 2011
• Outros Autores: Castro, Nuno Filipe Silva Fernandes, 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/1822/48773
• topic: Supersymmetry; Squark; Gluino; Search; LHC; ATLAS; Ciências Naturais::Ciências Físicas; Ciências Naturais::Ciências Físicas; Science & Technology

A search for squarks and gluinos in final states containing jets, missing transverse momentum and no electrons or muons is presented. The data were recorded by the ATLAS experiment in View the MathML sources=7 TeV proton–proton collisions at the Large Hadron Collider. No excess above the Standard Model background expectation was observed in 35 pb−135 pb−1 of analysed data. Gluino masses below 500 GeV are excluded at the 95% confidence level in simplified models containing only squarks of the first two generations, a gluino octet and a massless neutralino. The exclusion increases to 870 GeV for equal mass squarks and gluinos. In MSUGRA/CMSSM models with View the MathML sourcetanβ=3, A0=0A0=0 and μ>0μ>0, squarks and gluinos of equal mass are excluded below 775 GeV. These are the most stringent limits to date.