Measurement of the production cross-section of $\psi(2S) \to J/\psi ( \to \mu^{+} \mu^{-}) \pi^{+} \pi^{-}$ in pp collisions at $ \sqrt{s} $ = 7 TeV at ATLAS

ATLAS collaboration (2875 authors)Aguilar-Saavedra, Juan AntonioAmor Dos Santos, Susana PatriciaAnjos, NunoAraque, Juan PedroCantrill, RobertCarvalho, JoãoCastro, Nuno FilipeConde Muiño, PatriciaDa Cunha Sargedas De Sousa, Mario JoseDo Valle Wemans, AndréFiolhais, MiguelGalhardo, BrunoGomes, AgostinhoGonçalo, RicardoJorge, PedroLopes, LourencoMachado Miguens, JoanaMaio, AméliaManeira, JoséMarques, CarlosOnofre, AntónioPalma, AlbertoPedro, RutePina, João AntonioPinto, BelmiroSantos, HelenaSaraiva, JoãoSilva, JoséTavares Delgado, AdemarVeloso, FilipeWolters, Helmut2019-02-042019-02-042014-09-12http://dx.doi.org/10.1007/JHEP09(2014)079http://hdl.handle.net/10400.26/26649The prompt and non-prompt production cross-sections for ψ(2S) mesons are measured using 2.1 fb$^{−1}$ of pp collision data at a centre-of-mass energy of 7 TeV recorded by the ATLAS experiment at the LHC. The measurement exploits the ψ(2S) → J/ψ(→ μ$^{+}$ μ$^{−}$ )π$^{+}$ π$^{−}$ decay mode, and probes ψ(2S) mesons with transverse momenta in the range 10 ≤ p$_{T}$ < 100 GeV and rapidity |y| < 2.0. The results are compared to other measurements of ψ(2S) production at the LHC and to various theoretical models for prompt and non-prompt quarkonium production.engMeasurement of the production cross-section of $\psi(2S) \to J/\psi ( \to \mu^{+} \mu^{-}) \pi^{+} \pi^{-}$ in pp collisions at $ \sqrt{s} $ = 7 TeV at ATLASjournal article2019-02-04