Measurement of vector boson scattering and constraints on anomalous quartic couplings from events with four leptons and two jets in proton–proton collisions at $\sqrt{s}=$ 13 TeV - INSPIRE

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Measurement of vector boson scattering and constraints on anomalous quartic couplings from events with four leptons and two jets in proton–proton collisions at $\sqrt{s}=$ 13 TeV

CMS

Collaboration

Aug 9, 2017

24 pages

Published in:

Phys.Lett.B 774 (2017) 682-705

Published: Nov 10, 2017

e-Print:

1708.02812 [hep-ex]

DOI:

10.1016/j.physletb.2017.10.020

PDG:

{{\mathit a}_{{{0}}}}/\Lambda {}^{2}

{{\mathit a}_{{{c}}}}/\Lambda {}^{2}

{{\mathit a}_{{{n}}}}/\Lambda {}^{2}

{{\mathit \kappa}_{{{0}}}^{W}}/\Lambda {}^{2}

{{\mathit \kappa}_{{{c}}}^{W}}/\Lambda {}^{2}

{{\mathit f}}_{T,0}/\Lambda {}^{4}

{{\mathit f}}_{M,i}/\Lambda {}^{4}

{{\mathit \alpha}_{{{4}}}}

{{\mathit \alpha}_{{{5}}}}

_{S,i}/\Lambda {}^{4}

_{M,i}/\Lambda {}^{4}

_{T,i}/\Lambda {}^{4}

Report number:

CMS-SMP-17-006,
CERN-EP-2017-177

Experiments:

CERN-LHC-CMS

View in:

reference search127 citations

Citations per year

Abstract: (Elsevier)

A measurement of vector boson scattering and constraints on anomalous quartic gauge couplings from events with two Z bosons and two jets are presented. The analysis is based on a data sample of proton–proton collisions at s=13 TeV collected with the CMS detector and corresponding to an integrated luminosity of 35.9 fb−1 . The search is performed in the fully leptonic final state ZZ→ℓℓℓ′ℓ′ , where ℓ,ℓ′=e or μ . The electroweak production of two Z bosons in association with two jets is measured with an observed (expected) significance of 2.7 (1.6) standard deviations. A fiducial cross section for the electroweak production is measured to be σEW(pp→ZZjj→ℓℓℓ′ℓ′jj)=0.40−0.16+0.21(stat)−0.09+0.13(syst) fb , which is consistent with the standard model prediction. Limits on anomalous quartic gauge couplings are determined in terms of the effective field theory operators T0, T1, T2, T8, and T9. This is the first measurement of vector boson scattering in the ZZ channel at the LHC.

Note:

Replaced with the published version. Added the journal reference and DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/SMP-17-006/ (CMS Public Pages). arXiv admin note: text overlap with arXiv:1709.08601

CMS
Physics
SM
ZZ
VBS
aQGC
p p: colliding beams
jet: associated production
vector boson: scattering
coupling: gauge

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