Measurement of electroweak production of two jets in association with a Z boson in proton-proton collisions at root s=8 TeVopen access
- Authors
- Khachatryan, V; Sirunyan, AM; Tumasyan, A; Adam, W; Bergauer, T; Dragicevic, M; Eroe, J; Fabjan, C; Friedl, M; Kim, Tae Jeong
- Issue Date
- Feb-2015
- Publisher
- SPRINGER
- Citation
- EUROPEAN PHYSICAL JOURNAL C, v.75, no.2, pp.1 - 10
- Indexed
- SCIE
SCOPUS
- Journal Title
- EUROPEAN PHYSICAL JOURNAL C
- Volume
- 75
- Number
- 2
- Start Page
- 1
- End Page
- 10
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/143241
- DOI
- 10.1140/epjc/s10052-014-3232-5
- ISSN
- 1434-6044
- 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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