Differential production cross sections of prompt J/ψ and ψ(2S) charmonium and ϒ(nS) (n = 1, 2, 3) bottomonium states are measured in proton–proton collisions at √s = 13 TeV, with data collected by the CMS detector at the LHC, corresponding to an integrated luminosity of 2.3 fb−1 for the J/ψ and 2.7 fb−1 for the other mesons. The five quarkonium states are reconstructed in the dimuon decay channel, for dimuon rapidity |y| < 1.2. The double-differential cross sections for each state are measured as a function of y and transverse momentum, and compared to theoretical expectations. In addition, ratios are presented of cross sections for prompt ψ(2S) to J/ψ, ϒ(2S) to ϒ(1S), and ϒ(3S) to ϒ(1S) production.
Measurement of quarkonium production cross sections in pp collisions at √s = 13TeV
Meridiani, P.;Amapane, N.;Argiro, S.;Bellan, R.;Costa, M.;Covarelli, R.;Kiani, B.;Migliore, E.;Monaco, V.;Monteil, E.;Obertino, M. M.;Pacher, L.;Pinna Angioni, G. L.;Ravera, F.;Romero, A.;Sacchi, R.;Sola, V.;Solano, A.;Rumerio, P.;
2018-01-01
Abstract
Differential production cross sections of prompt J/ψ and ψ(2S) charmonium and ϒ(nS) (n = 1, 2, 3) bottomonium states are measured in proton–proton collisions at √s = 13 TeV, with data collected by the CMS detector at the LHC, corresponding to an integrated luminosity of 2.3 fb−1 for the J/ψ and 2.7 fb−1 for the other mesons. The five quarkonium states are reconstructed in the dimuon decay channel, for dimuon rapidity |y| < 1.2. The double-differential cross sections for each state are measured as a function of y and transverse momentum, and compared to theoretical expectations. In addition, ratios are presented of cross sections for prompt ψ(2S) to J/ψ, ϒ(2S) to ϒ(1S), and ϒ(3S) to ϒ(1S) production.File | Dimensione | Formato | |
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