Measurement of electroweak production of two jets in association with a Z boson in proton-proton collisions at root s=8 TeV

Title
Measurement of electroweak production of two jets in association with a Z boson in proton-proton collisions at root s=8 TeV
Authors
김태정
Keywords
RAPIDITY GAPS; LHC
Issue Date
2015-02
Publisher
SPRINGER
Citation
EUROPEAN PHYSICAL JOURNAL C, v. 75, NO 2, Page. 1-10
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.
URI
http://link.springer.com/article/10.1140%2Fepjc%2Fs10052-014-3232-5http://hdl.handle.net/20.500.11754/22237
ISSN
1434-6044; 1434-6052
DOI
http://dx.doi.org/10.1140/epjc/s10052-014-3232-5
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COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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