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Title: Measurement of electroweak production of two jets in association with a Z boson in proton-proton collisions at $$\sqrt{s}=8\,\text {TeV}$$

The purely electroweak (EW) cross section for the production of two jets in association with a Z boson, in proton–proton collisions at √s=8TeV, is measured using data recorded by the CMS experiment at the CERN LHC, corresponding to an integrated luminosity of 19.7fb-1. We also defined the electroweak cross section for the ℓℓjj final state (with ℓ=e or μ and j representing the quarks produced in the hard interaction) in the kinematic region by Mℓℓ>50 GeV, Mjj>120GeV, transverse momentum pTj>25 GeV, and pseudorapidity |ηj|<5, is found to be σEW(ℓℓjj)=174±15(stat)±40(syst)\,fb, in agreement with the standard model prediction. Finallly, 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.
Authors:
 [1]
  1. Yerevan Physics Inst. (YerPhI) (Armenia). et al.
Publication Date:
OSTI Identifier:
1234855
Report Number(s):
FERMILAB-PUB--14-443-CMS; CERN-PH-EP--2014-234; CMS-FSQ--12-035
Journal ID: ISSN 1434-6052; arXiv eprint number arXiv:1410.3153
Grant/Contract Number:
AC02-07CH11359
Type:
Accepted Manuscript
Journal Name:
European physical journal. C, Particles and fields (Online)
Additional Journal Information:
Journal Name: European physical journal. C, Particles and fields (Online); Journal Volume: 75; Journal Issue: 02; Journal ID: ISSN 1434-6052
Publisher:
Springer
Research Org:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Orgs:
CMS Collaboration
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS