Measurement of the differential cross-section with respect to momentum and rapidity of the J/ψ meson and the non-prompt J/ψ cross-section fraction in pp collisions at sqrt(s)=7 TeV with the ATLAS detector

The inclusive production of the J/ψ resonance is studied with the ATLAS detector in LHC proton-proton collisions at sqrt(s)=7 TeV using the J/ψ decay mode to two muons. Using the first 2.3 pb−1 of data, two related physics measurements are performed: the double-differential production cross section with respect to the transverse momentum and rapidity of the J/ψ, and the fraction of J/ψ mesons produced from b hadron decays with respect to the J/ψ transverse momentum and rapidity. These two measurements are combined to produce the prompt and non-prompt J/ψ cross-sections.