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@ARTICLE{Aad:221708,
      author       = {Aad, Georges and others},
      collaboration = {{ATLAS Collaboration}},
      title        = {{O}bservation 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 {T}e{V} with the
                      {ATLAS} detector},
      journal      = {The European physical journal / C},
      volume       = {75},
      number       = {5},
      issn         = {1434-6052},
      address      = {Berlin},
      publisher    = {Springer},
      reportid     = {PUBDB-2015-02788, CERN-PH-EP-2014-276},
      pages        = {229},
      year         = {2015},
      note         = {OA},
      abstract     = {The production of a $Z$ boson in association with a
                      $J/\psi$ meson in proton-proton collisions probes the
                      production mechanisms of quarkonium and heavy flavour in
                      association with vector bosons, and allows studies of
                      multiple parton scattering. Using $20.3\, \mathrm{fb^{-1}}$
                      of data collected with the ATLAS experiment at the LHC in
                      $pp$ collisions at $\sqrt{s}=8\, \mathrm{TeV}$, the first
                      measurement of associated $Z + J/\psi$ production is
                      presented for both prompt and non-prompt $J/\psi$
                      production, with both signatures having a significance in
                      excess of $5\sigma$. The inclusive production cross-sections
                      for $Z$ boson production (analysed in $\mu^+\mu^-$ or
                      $e^+e^-$ decay modes) in association with prompt and
                      non-prompt $J/\psi(\to\mu^+\mu^-)$ are measured relative to
                      the inclusive production rate of $Z$ bosons in the same
                      fiducial volume to be $(36.8\pm 6.7\pm 2.5) \times 10^{-7}$
                      and $(65.8\pm 9.2\pm 4.2) \times 10^{-7}$ respectively.
                      Normalised differential production cross-section ratios are
                      also determined as a function of the $J/\psi$ transverse
                      momentum. The fraction of signal events arising from single
                      and double parton scattering is estimated, and a lower limit
                      of $5.3\ (3.7)\, \mathrm{mb}$ at $68\ (95)$\% confidence
                      level is placed on the effective cross-section regulating
                      double parton interactions.},
      cin          = {ATLAS},
      ddc          = {530},
      cid          = {I:(DE-H253)ATLAS-20120731},
      pnm          = {Experiments at LHC (ATLAS) (POF2-512)},
      pid          = {G:(DE-H253)POF2-LHC-Exp.-(ATLAS)-20130405},
      experiment   = {EXP:(DE-H253)LHC-Exp-ATLAS-20150101},
      typ          = {PUB:(DE-HGF)29 / PUB:(DE-HGF)16},
      eprint       = {1412.6428},
      howpublished = {arXiv:1412.6428},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:1412.6428;\%\%$},
      UT           = {WOS:000355680900005},
      pubmed       = {pmid:26041977},
      doi          = {10.1140/epjc/s10052-015-3406-9},
      url          = {https://bib-pubdb1.desy.de/record/221708},
}