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

Abstract

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]
+ Show Author Affiliations
  1. Yerevan Physics Inst. (YerPhI) (Armenia). et al.
Publication Date:
Research Org.:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Org.:
CMS Collaboration
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
Resource 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
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Khachatryan, Vardan. Measurement of electroweak production of two jets in association with a Z boson in proton-proton collisions at $\sqrt{s}=8\,\text {TeV}$. United States: N. p., 2015. Web. doi:10.1140/epjc/s10052-014-3232-5.
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Khachatryan, Vardan. Measurement of electroweak production of two jets in association with a Z boson in proton-proton collisions at $\sqrt{s}=8\,\text {TeV}$. United States. https://doi.org/10.1140/epjc/s10052-014-3232-5
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Khachatryan, Vardan. Tue . "Measurement of electroweak production of two jets in association with a Z boson in proton-proton collisions at $\sqrt{s}=8\,\text {TeV}$". United States. https://doi.org/10.1140/epjc/s10052-014-3232-5. https://www.osti.gov/servlets/purl/1234855.
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@article{osti_1234855,
title = {Measurement of electroweak production of two jets in association with a Z boson in proton-proton collisions at $\sqrt{s}=8\,\text {TeV}$},
author = {Khachatryan, Vardan},
abstractNote = {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.},
doi = {10.1140/epjc/s10052-014-3232-5},
journal = {European Physical Journal. C, Particles and Fields (Online)},
number = 02,
volume = 75,
place = {United States},
year = {Tue Feb 10 00:00:00 EST 2015},
month = {Tue Feb 10 00:00:00 EST 2015}
}
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Journal Article:
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Publisher's Version of Record
https://doi.org/10.1140/epjc/s10052-014-3232-5
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Cited by: 33 works
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Figures / Tables:

Fig. 1 Fig. 1: Representative Feynman diagrams for dilepton production in association with two jets from purely electroweak contributions: (left) vector boson fusion, (middle) bremsstrahlung-like, and (right) multiperipheral production
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    Works referencing / citing this record:

    Measurement of electroweak production of a W boson and two forward jets in proton-proton collisions at s = 8 $$ \sqrt{s}=8 $$ TeV
    journal, November 2016

    • Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.
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    Electroweak production of two jets in association with a Z boson in proton-proton collisions at $\sqrt{s}= $ 13 $\,\text {TeV}
    text, January 2017

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    • Collaboration, Cms; Khachatryan, V.; Sirunyan, A. M.
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    • DOI: 10.5167/uzh-122858

    Weakly Supervised Classification in High Energy Physics
    text, January 2017

    Systematics of quark/gluon tagging
    text, January 2017

    Investigating the Topology Dependence of Quark and Gluon Jets
    text, January 2018

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      Figures / Tables found in this record:

      Fig. 1 (p. 2)figure
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      Table 2 (p. 13)table
      Table 3 (p. 13)table
      Table 4 (p. 14)table
      Table 5 (p. 14)table
      Fig. 10 (p. 15)figure
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