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EnglishThe double-differential cross sections of promptly produced J/ψ and ψ(2S) mesons are measured in pp collisions at s√=7 TeV, as a function of transverse momentum pT and absolute rapidity |y|. The analysis uses J/ψ and ψ(2S) dimuon samples collected by the CMS experiment, corresponding to integrated luminosities of 4.55 and 4.90 fb−1, respectively. The results are based on a two-dimensional analysis of the dimuon invariant mass and decay length, and extend to pT=120 and 100 GeV for the J/ψ and ψ(2S), respectively, when integrated over the interval |y|<1.2. The ratio of the ψ(2S) to J/ψ cross sections is also reported for |y|<1.2, over the range 10<pT<100 GeV. These are the highest pT values for which the cross sections and ratio have been measured.
| Titolo: | Measurement of J/psi and Psi(2S) prompt double-differential cross sections in pp collisions at sqrt(s) = 7 TeV |
| Autori: | |
| Data di pubblicazione: | 2015 |
| Rivista: | |
| Abstract: | The double-differential cross sections of promptly produced J/ψ and ψ(2S) mesons are measured in pp collisions at s√=7 TeV, as a function of transverse momentum pT and absolute rapidity |y|. The analysis uses J/ψ and ψ(2S) dimuon samples collected by the CMS experiment, corresponding to integrated luminosities of 4.55 and 4.90 fb−1, respectively. The results are based on a two-dimensional analysis of the dimuon invariant mass and decay length, and extend to pT=120 and 100 GeV for the J/ψ and ψ(2S), respectively, when integrated over the interval |y|<1.2. The ratio of the ψ(2S) to J/ψ cross sections is also reported for |y|<1.2, over the range 10<pT<100 GeV. These are the highest pT values for which the cross sections and ratio have been measured. |
| Handle: | http://hdl.handle.net/11368/2840401 |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1103/PhysRevLett.114.191802 |
| URL: | http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.114.191802 |
| Appare nelle tipologie: | 1.1 Articolo in Rivista |
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| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| Measurement of J-psi and psi(2S) prompt double-differential cross sections in pp collisions.pdf | file pdf | Documento in Versione Editoriale | Digital Rights Management non definito | Open Access Visualizza/Apri |
http://hdl.handle.net/11368/2840401
