Nonlinear Phenomena in Complex Systems, 2018, Vol.21, No.4, pp.401

NONLINEAR PHENOMENA IN COMPLEX SYSTEMS
An Interdisciplinary Journal

2018, Vol.21, No.4, pp.401 - 405

Constraints on Z-Z' Mixing with ATLAS at the LHC at 13 TeV and 79.8 fb^-1
I. A. Serenkova, A. A. Pankov, and V. A. Bednyakov

Extra neutral vector bosons Z' decaying to charged gauge vector boson pairs W⁺W⁻ are predicted in many scenarios of new physics. The diboson production allows to set stringent constraints on the Z-Z' mixing factor ξ and Z' mass, M_Z' , which were placed for the first time by using data comprised of pp collisions at √s = 13 TeV and recorded by the ATLAS detector at the CERN LHC, with integrated luminosities of 79.8 fb^-1. We found that these constraints on the Z-Z' mixing are more severe than those derived from the analysis of diboson production data collected at 36.1 fb^-1. Further improvement on the constraining of this mixing can be achieved from the analysis of data to be collected at higher luminosity.

Key words: new gauge Z' bosons, ATLAS experiment, Large Hadron Collider (LHC)

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