Study of the LHC experiments sensitivity to anomalous quartic gauge couplings in $Z\gamma\gamma$ production during Run2

Run2 sensitivity to anomalous quartic gauge couplings was estimated for ATLAS experiment at LHC with increased energy of proton-proton collisions $\sqrt s = 13{\rm{ TeV}}$ and expected 40 fb(−)(1) of integral luminosity. Simulation of Zγγ process with anomalous ZZγγ and Zγγγ couplings was performed using VBFNLO MC generator. Differential distributions on four-body invariant mass of final state particles was used for extraction of expected limits on Effective Field Theory parameters f(T) (0) /Λ(4) , f(T) (5) /Λ(4) , f(T) (9) /Λ(4) , f(M) (2) /Λ(4) , f(M) (3) /Λ(4). Combined limits are obtained from two charged leptonic decay channels of Z boson (Zγγ → l (+) l (−) γγ, where l = e or µ). Unitarity of expected limits was studied using dipole form factor approach.