Measurement of hard double-parton interactions in $W(\\to lν)$+ 2 jet events at $\\sqrts$=7 TeV with the ATLAS detector
Journal
New Journal of Physics
Journal Volume
15
Pages
033038
Date Issued
2013
Author(s)
Aad, Georges et al. (The ATLAS Collaboration)
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.
SDGs
Type
journal article