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Scientific article
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English

Measurement of the cross-section for electroweak production of dijets in association with a Z boson in pp collisions at √s = 13 TeV with the ATLAS detector

ContributorsATLAS Collaboration
Published inPhysics Letters. B, vol. 775, p. 206-228
Collection
  • Open Access - SCOAP3
Publication date2017
Abstract

The cross-section for the production of two jets in association with a leptonically decaying Z boson ( Zjj ) is measured in proton–proton collisions at a centre-of-mass energy of 13 TeV, using data recorded with the ATLAS detector at the Large Hadron Collider, corresponding to an integrated luminosity of 3.2 fb −1 . The electroweak Zjj cross-section is extracted in a fiducial region chosen to enhance the electroweak contribution relative to the dominant Drell–Yan Zjj process, which is constrained using a data-driven approach. The measured fiducial electroweak cross-section is σEWZjj = 119±16(stat.)±20(syst.)±2(lumi.) fb for dijet invariant mass greater than 250 GeV, and 34.2±5.8(stat.)±5.5(syst.)±0.7(lumi.) fb for dijet invariant mass greater than 1 TeV. Standard Model predictions are in agreement with the measurements. The inclusive Zjj cross-section is also measured in six different fiducial regions with varying contributions from electroweak and Drell–Yan Zjj production.

Citation (ISO format)
ATLAS Collaboration. Measurement of the cross-section for electroweak production of dijets in association with a Z boson in pp collisions at √s = 13 TeV with the ATLAS detector. In: Physics Letters. B, 2017, vol. 775, p. 206–228. doi: 10.1016/j.physletb.2017.10.040
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Article (Published version)
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ISSN of the journal0370-2693
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