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Measurement of the production cross section of prompt j/psi mesons in association with a W (+/-) boson in pp collisions root s=7 TeV with the ATLAS detector
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
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2014 (English)In: Journal of High Energy Physics (JHEP), ISSN 1126-6708, E-ISSN 1029-8479, no 4, 172- p.Article in journal (Refereed) Published
Abstract [en]

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 root 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(mu) and J/psi -> mu(+)mu(-) center dot A yield of 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.

Place, publisher, year, edition, pages
2014. no 4, 172- p.
Keyword [en]
Hadron-Hadron Scattering
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-146229DOI: 10.1007/JHEP04(2014)172ISI: 000335732000001Scopus ID: 2-s2.0-84901707109OAI: oai:DiVA.org:kth-146229DiVA: diva2:723049
Note

QC 20140610. Author count: 2913.

Available from: 2014-06-10 Created: 2014-06-10 Last updated: 2017-12-05Bibliographically approved

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Strandberg, Jonas

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Jovicevic, JelenaKuwertz, EmmaLund-Jensen, BengtMorley, AnthonyStrandberg, Jonas
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