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oai:recercat.cat:2445/1793582025-12-05T16:42:08Zcom_2072_1057col_2072_478823col_2072_478917

Measurement of psi (2S) production cross-sections in proton-proton collisions at v s=7 and 13 TeV Alfonso Albero, Alejandro Calvo Gómez, Míriam Camboni, Alessandro Coquereau, Samuel Garrido Beltrán, Lluís Gascón Fora, David Gironella Gironell, Pere Graciani Díaz, Ricardo Graugés Pous, Eugeni Vilasis-Cardona, Xavier Protons Electromagnetisme Protons Electromagnetism The cross-sections of ψ(2S) meson production in proton-proton collisions at √ s = 13 TeV are measured with a data sample collected by the LHCb detector corresponding to an integrated luminosity of 275 pb−1. The production cross-sections for prompt ψ(2S) mesons and those for ψ(2S) mesons from b-hadron decays (ψ(2S)-from-b) are determined as functions of the transverse momentum, pT, and the rapidity, y, of the ψ(2S) meson in the kinematic range 2 < pT < 20 GeV/c and 2.0 < y < 4.5. The production cross-sections integrated over this kinematic region are σ(prompt ψ(2S), 13 TeV) = 1.430 ± 0.005 (stat) ± 0.099 (syst) μb, σ(ψ(2S)-from-b, 13 TeV) = 0.426 ± 0.002 (stat) ± 0.030 (syst) μb. A new measurement of ψ(2S) production cross-sections in pp collisions at √ s = 7 TeV is also performed using data collected in 2011, corresponding to an integrated luminosity of 614 pb−1. The integrated production cross-sections in the kinematic range 3.5 < pT < 14 GeV/c and 2.0 < y < 4.5 are σ(prompt ψ(2S),7 TeV) = 0.471 ± 0.001 (stat) ± 0.025 (syst) μb, σ(ψ(2S)-from-b,7 TeV) = 0.126 ± 0.001 (stat) ± 0.008 (syst) μb. All results show reasonable agreement with theoretical calculations. 2021-07-22T12:41:22Z 2021-07-22T12:41:22Z 2020-02-28 2021-07-22T12:41:22Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 1434-6044 https://hdl.handle.net/2445/179358 706217 eng Reproducció del document publicat a: https://doi.org/10.1140/epjc/s10052-020-7638-y European Physical Journal C, 2020, vol. 80, num. 185 https://doi.org/10.1140/epjc/s10052-020-7638-y cc-by (c) Alfonso Albero, Alejandro et al., 2020 https://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess 23 p. application/pdf Società Italiana di Fisica & Springer Verlag Articles publicats en revistes (Física Quàntica i Astrofísica)