Measurement of the prompt $J/\psi$ pair production cross-section in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector

Abstract

The production of two prompt $J/\psi$ mesons, each with transverse momenta $p_{\mathrm{T}}>8.5$ GeV and rapidity $|y|<2.1$, is studied using a sample of proton-proton collisions at $\sqrt{s}=8$ TeV, corresponding to an integrated luminosity of 11.4 fb${}^{-1}$ collected in 2012 with the ATLAS detector at the LHC. The differential cross-section, assuming unpolarised $J/\psi$ production, is measured as a function of the transverse momentum of the lower-$p_{\mathrm{T}}$ $J/\psi$ meson, di-$J/\psi$ $p_{\mathrm{T}}$ and mass, the difference in rapidity between the two $J/\psi$ mesons, and the azimuthal angle between the two $J/\psi$ mesons. The fraction of prompt pair events due to double parton scattering is determined by studying kinematic correlations between the two $J/\psi$ 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 ${\sigma }_{\mathrm{eff}}=6.3\pm 1.6(\mathrm{stat})\pm 1.0(\mathrm{syst})$ mb.

53 pages in total, author list starting page 37, 15 figures, 4 tables, published version, all figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/BPHY-2015-02/

References in corpus (15)

• Parton distributions for the LHC
• Big-Bang Nucleosynthesis
• Heavy quarkonium: progress, puzzles, and opportunities
• Measurement of the muon reconstruction performance of the ATLAS detector using 2011 and 2012 LHC proton-proton collision data
• The RooFit toolkit for data modeling
• J/psi, psi' and Upsilon Production at Hadron Colliders: a review
• The four jet production at LHC and Tevatron in QCD
• Observation and measurements of the production of prompt and non-prompt $J/\psi$ mesons in association with a $Z$ boson in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• Performance of the ATLAS muon trigger in pp collisions at $\sqrt{s}=8$ TeV
• Measurement of J/psi and psi(2S) prompt double-differential cross sections in pp collisions at sqrt(s) = 7 TeV
• Inclusive double-quarkonium production at the Large Hadron Collider
• Complete Nonrelativistic-QCD Prediction for Prompt Double $J/\psi$ Hadroproduction
• Production of $J/\psi +{\chi }_c$ and $J/\psi +J/\psi$ with real gluon emission at LHC
• Double parton scattering in pair-production of $J/\psi$ mesons at the LHC revisited
• Constraining double parton correlations and interferences

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• Color Reconnection Effects in $J/\psi$ Hadroproduction
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• Associated production of ${\chi }_c$ pairs with a gluon in the collinear-factorization approach
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• Working Group 5: Physics with Heavy Flavours
• Modeling Double Parton Scattering at LHC