Procura de um bóson de Higgs no canal de decaimento H → WW → lvjj no experimento CMS do CERN

• Autor(a) principal: Rosas, Luis Junior Sánchez
• Data de Publicação: 2015
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UERJ
• Texto Completo: http://www.bdtd.uerj.br/handle/1/12962
• topic: Higgs Boson; Compact Muon Solenoid; Large Hadron Collider; European Organization for Nuclear Research; Bóson de Higgs; Solenóide de múon compacto; Grande colisor de hádrons; Centro Europeu de Pesquisas Nucleares; CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA::FISICA DAS PARTICULAS ELEMENTARES E CAMPOS

In this dissertation we present the search for a standard model-like Higgs boson decaying to two W bosons with the subsequent decay to a final state containing one lepton, one neutrino, and two jets "l H → WW → lvjj (l = e , u. e j = jato)". The results are based on a data sample corresponding to an integrated luminosity of 19.2 fb-1 of proton-proton collisions at ps = 8 TeV collected with the CMS detector at the CERN LHC. Selections to discriminate between the signal and background events are based on kinematic and topological quantities including the angular spin correlations between the decay products. A standard model-like Higgs boson is excluded in the mass range [180-600] except to 200 GeV/c2 at 95% confidence level, while the median expected exclusion range is [180-600] except to 200 GeV/c2.