Production of J/ψ and $ \varUpsilon $ mesons in pp collisions at $ \sqrt{s}=8 $ TeV

By R. Aaij, C. Beteta, B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, Z. Ajaltouni, J. Albrecht, F. Alessio, M. Alexander and 621 more. 2013

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A bstractThe production of J/ψ and $ \varUpsilon $ mesons in pp collisions at $ \sqrt{s}=8 $ TeV is studied with the LHCb detector. The J/ψ and $ \varUpsilon $ mesons are reconstructed in the μ+μ− decay mode and the signal yields are determined with a fit to the μ+μ− invariant mass distributions. The analysis is performed in the rapidity range 2. 0 < y < 4. 5 and transverse momentum range 0 < pT< 14 (15) GeV/c of the J/ψ$ \left( \varUpsilon \right) $ mesons. The J/ψ and $ \varUpsilon $ production cross-sections and the fraction of J/ψ mesons from b-hadron decays are measured as a function of the meson pT and y.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/fbc793b2aa5632593a7ee7a8ac73345c6bb31726