Measurement of the prompt <i>J/ψ</i> pair production cross-section in <i>pp</i> collisions at √<i>s</i>=8 TeV with the ATLAS detector



Aaboud, M, Aad, G, Abbott, B, Abdallah, J, Abdinov, O, Abeloos, B, Aben, R, AbouZeid, OS, Abraham, NL, Abramowicz, H
et al (show 2833 more authors) (2017) Measurement of the prompt <i>J/ψ</i> pair production cross-section in <i>pp</i> collisions at √<i>s</i>=8 TeV with the ATLAS detector. EUROPEAN PHYSICAL JOURNAL C, 77 (2). 76-.

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Abstract

The production of two prompt [Formula: see text] mesons, each with transverse momenta [Formula: see text] GeV and rapidity [Formula: see text], is studied using a sample of proton-proton collisions at [Formula: see text] TeV, corresponding to an integrated luminosity of 11.4 fb[Formula: see text] collected in 2012 with the ATLAS detector at the LHC. The differential cross-section, assuming unpolarised [Formula: see text] production, is measured as a function of the transverse momentum of the lower-[Formula: see text] [Formula: see text] meson, di-[Formula: see text] [Formula: see text] and mass, the difference in rapidity between the two [Formula: see text] mesons, and the azimuthal angle between the two [Formula: see text] mesons. The fraction of prompt pair events due to double parton scattering is determined by studying kinematic correlations between the two [Formula: see text] 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 [Formula: see text] mb.

Item Type: Article
Additional Information: 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/
Uncontrolled Keywords: ATLAS Collaboration
Depositing User: Symplectic Admin
Date Deposited: 14 Mar 2017 14:49
Last Modified: 12 Oct 2023 08:57
DOI: 10.1140/epjc/s10052-017-4644-9
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3006383