Measurement of Electroweak Production of Two Jets in Association With a Z Boson in Proton-Proton Collisions at ?s=8 Tev
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Abstract
The purely electroweak (EW) cross section for the production of two jets in association with a Z boson, in proton-proton collisions at root s = 8 TeV, is measured using data recorded by the CMS experiment at the CERN LHC, corresponding to an integrated luminosity of 19.7 fb(-1). The electroweak cross section for the lljj final state (with l = e or mu and j representing the quarks produced in the hard interaction) in the kinematic region defined by M-ll > 50 GeV, M-jj > 120 GeV, transverse momentum p(Tj) > 25 GeV, and pseudorapidity vertical bar eta(j)vertical bar < 5, is found to be sigma(EW) (lljj) = 174 +/- 15 (stat) +/- 40 (syst) fb, in agreement with the standard model prediction. The associated jet activity of the selected events is studied, in particular in a signal-enriched region of phase space, and the measurements are found to be in agreement with QCD predictions.
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PubMed: 25838791
Keywords
Standard Model, Physics and Astronomy (miscellaneous), dilepton: mass spectrum, mass spectrum [dijet], Engineering (miscellaneous), Physics and Astronomy (miscellaneous)., Rapidity gaps, measured [cross section], electroweak interaction: effect, mass spectrum [dilepton], Atomic, 510, PARTICLE PHYSICS; LARGE HADRON COLLIDER; CMS, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Particle and Plasma Physics, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], scattering [p p], p p --> Z0 2jet anything, associated production [Z0], info:eu-repo/classification/ddc/530, High energy physics ; Experimental particle physics ; LHC ; CMS ; Standard Model, 8000 GeV-cms, Quantum Physics, [Anahtar Kelime Yok], CMS, Physics, ddc:530, 320, Nuclear & Particles Physics, Proton–proton collisions, CERN LHC Coll, effect [electroweak interaction], CMS ; proton-proton collisions ; electroweak interaction ; jet physics, CMS Collaboration, hadroproduction [jet], Physique des particules élémentaires, PARTICLE PHYSICS, Lhc, LHC, colliding beams [p p], Particle Physics - Experiment, Z boson, p p: scattering, CERN Lab, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], dijet: mass spectrum, Regular Article - Experimental Physics, FOS: Physical sciences, RAPIDITY GAPS; LHC, 530, RAPIDITY GAPS, quantum chromodynamics, p p --> Z0 2jet anything, Nuclear, High energy physics, Engineering (miscellaneous); Physics and Astronomy (miscellaneous), ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика, Engineering (miscellaneous), Rapidity Gaps, Electroweak production, Physics and Astronomy (miscellaneous); Engineering (miscellaneous), hep-ex, 940, Molecular, cross section: measured, LARGE HADRON COLLIDER, jet: hadroproduction, Z0: associated production, Physics and Astronomy, Particle Physics, LHC, CMS, Z boson, QC Physics / fizika, Experimental particle physics, p p: colliding beams, experimental results
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01 natural sciences, 06 humanities and the arts, 0103 physical sciences, 0105 earth and related environmental sciences, 0604 arts
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Q2
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Q1
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European Physical Journal C
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75
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2
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