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Scientific article
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English

Measurement of hard double-parton interactions in W( -> ℓν) + 2-jet events at √s = 7 TeV with the ATLAS detector

ContributorsATLAS Collaboration
Published inNew journal of physics, vol. 15, no. 033038, 39
Publication date2013
Abstract

The production of W bosons in association with two jets in proton–proton collisions at a centre-of-mass energy of √s=7 TeV has been analysed for the presence of double-parton interactions using data corresponding to an integrated luminosity of 36 pb−1, collected with the ATLAS detector at the Large Hadron Collider. The fraction of events arising from double-parton interactions, f(D)DP, has been measured through the pT balance between the two jets and amounts to f(D)DP = 0.08 ± 0.01 (stat.) ± 0.02 (sys.) for jets with transverse momentum pT > 20 GeV and rapidity |y| < 2.8. This corresponds to a measurement of the effective area parameter for hard double-parton interactions of σeff = 15 ± 3 (stat.) +5−3 (sys.) mb.

Citation (ISO format)
ATLAS Collaboration. Measurement of hard double-parton interactions in <em>W( -&gt; ℓν)</em> + 2-jet events at √s = 7 TeV with the ATLAS detector. In: New journal of physics, 2013, vol. 15, n° 033038, p. 39. doi: 10.1088/1367-2630/15/3/033038
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Article (Published version)
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ISSN of the journal1367-2630
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