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

Suranyan, A.M. and Tumasyan, A. R. and Adam, Wolfgang and Ambrogi, Federico and Asilar, Ece and Md. Ali, Mohd. Adli (2017) Measurement of vector boson scattering and constraints on anomalous quartic couplings from events with four leptons and two jets in proton–proton collisions at s=13 TeV. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 774. pp. 682-705. ISSN 0370-2693

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Abstract

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 → � � , where , � = 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 → � � jj) = 0.40+0.21 −0.16 (stat) +0.13 −0.09 (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.

Item Type:	Article (Journal)
Additional Information:	7861/63037
Uncontrolled Keywords:	aQGC; CMS; Physics; SM; VBS; ZZ
Subjects:	Q Science > Q Science (General) Q Science > QC Physics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science
Depositing User:	Engku Norulizati Engku Aziz
Date Deposited:	07 May 2018 12:24
Last Modified:	21 Jun 2018 10:54
URI:	http://irep.iium.edu.my/id/eprint/63037

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