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Measurement of the differential cross-sections of inclusive, prompt and non-prompt J/psi production in proton-proton collisions at root s=7 TeV

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Resumo:The inclusive J/ψJ/ψ production cross-section and fraction of J/ψJ/ψ mesons produced in B -hadron decays are measured in proton–proton collisions at View the MathML sources=7 TeV with the ATLAS detector at the LHC, as a function of the transverse momentum and rapidity of the J/ψJ/ψ, using 2.3 pb−1 of integrated luminosity. The cross-section is measured from a minimum pTpT of 1 GeV to a maximum of 70 GeV and for rapidities within |y|<2.4|y|<2.4 giving the widest reach of any measurement of J/ψJ/ψ production to date. The differential production cross-sections of prompt and non-prompt J/ψJ/ψ are separately determined and are compared to Colour Singlet NNLO⋆NNLO⋆, Colour Evaporation Model, and FONLL predictions.
Autores principais:Onofre, A.
Outros Autores:Castro, Nuno Filipe Silva Fernandes; ATLAS Collaboration
Assunto:Ciências Naturais::Ciências Físicas Ciências Naturais::Ciências Físicas
Ano:2011
País:Portugal
Tipo de documento:artigo
Tipo de acesso:acesso aberto
Instituição associada:Universidade do Minho
Idioma:inglês
Origem:RepositóriUM - Universidade do Minho

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