Measurement of the production cross section of prompt J/psi mesons in association with a W boson in pp collisions at sqrt{s}=7 TeV with the ATLAS detector

Abstract

The process pp--> W + J/psi provides a powerful probe of the production mechanism of charmonium in hadronic collisions, and is also sensitive to multiple parton interactions in the colliding protons. Using the 2011 ATLAS dataset of 4.5 fb-1 of sqrt{s} = 7 TeV pp collisions at the LHC, the first observation is made of the production of W + prompt J/psi events in hadronic collisions, using W-->mu+nu and J/psi-->mu+mu. A yield of 27.4+7.5-6.5 W + prompt J/psi events is observed, with a statistical significance of 5.1 sigma. The production rate as a ratio to the inclusive W boson production rate is measured, and the double parton scattering contribution to the cross section is estimated.

19 pages plus author list (40 pages total), 6 figures, 3 tables, submitted to JHEP. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/BPHY-2012-06

References in corpus (9)

• Heavy quarkonium: progress, puzzles, and opportunities
• FEWZ 2.0: A code for hadronic Z production at next-to-next-to-leading order
• Theoretical considerations on multiparton interactions in QCD
• Phenomenology of a very light scalar (100 MeV $<m_h<$ 10 GeV) mixing with the SM Higgs
• The four jet production at LHC and Tevatron in QCD
• On the mechanisms of heavy-quarkonium hadroproduction
• Double Parton Scattering Singularity in One-Loop Integrals
• Next-to-leading-order tests of nonrelativistic-QCD factorization with $J/\psi$ yield and polarization
• QCD corrections to $J/\psi$ production in association with a $W$-boson at the LHC

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