Measurement of the prompt J/ψ pair production cross-sectionin pp collisions at √s = 8 TeV with the ATLAS detector

ATLAS Collaboration

Research output: Contribution to journalArticlepeer-review

63 Citations (Scopus)
161 Downloads (Pure)


The production of two prompt J/ψJ/ψ mesons, each with transverse momenta pT>8.5pT>8.5 GeV and rapidity |y|<2.1|y|<2.1, is studied using a sample of proton-proton collisions at s√=8s=8 TeV, corresponding to an integrated luminosity of 11.4 fb−1−1 collected in 2012 with the ATLAS detector at the LHC. The differential cross-section, assuming unpolarised J/ψJ/ψ production, is measured as a function of the transverse momentum of the lower-pTpTJ/ψJ/ψ meson, di-J/ψJ/ψpTpT and mass, the difference in rapidity between the two J/ψJ/ψ mesons, and the azimuthal angle between the two J/ψJ/ψ mesons. The fraction of prompt pair events due to double parton scattering is determined by studying kinematic correlations between the two J/ψJ/ψ mesons. The total and double parton scattering cross-sections are compared with predictions. The effective cross-section of double parton scattering is measured to be σeff=6.3±1.6(stat)±1.0(syst)σeff=6.3±1.6(stat)±1.0(syst) mb.
Original languageEnglish
Article number76
JournalEuropean Physical Journal C
Early online date7 Feb 2017
Publication statusE-pub ahead of print - 7 Feb 2017

Bibliographical note

53 pages in total, author list starting page 37, 15 figures, 4 tables, submitted to EPJC, all figures including auxiliary figures are available at


Dive into the research topics of 'Measurement of the prompt J/ψ pair production cross-sectionin pp collisions at √s = 8 TeV with the ATLAS detector'. Together they form a unique fingerprint.

Cite this