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

Krauss, F.; Collaboration, ATLAS

Abstract

The production of W bosons in association with two jets in proton–proton collisions at a centre-of-mass energy of $\sqrt {s} = 7\,{\mathrm {TeV}}$ 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

Krauss, F., & Collaboration, A. (2013). Measurement of hard double-parton interactions in W->lv+ 2-jet events at sqrt(s)=7 TeV with the ATLAS detector. New Journal of Physics, 15, https://doi.org/10.1088/1367-2630/15/3/033038

• Journal Article Type: Article
• Publication Date: Mar 25, 2013
• Deposit Date: Mar 5, 2013
• Publicly Available Date: Sep 14, 2015
• Journal: New Journal of Physics
• Publisher: IOP Publishing
• Peer Reviewed: Peer Reviewed
• Volume: 15
• DOI: https://doi.org/10.1088/1367-2630/15/3/033038