Studies of Neutral Triple Gauge Couplings Using Augmented Vertex Function Approach with $${Z(\nu\bar{\nu})\gamma}$$ Production at the LHC

An indirect method of searching for new interactions of already known fundamental particles is used in this article. This method searches for anomalous triple gauge-boson couplings (aTGCs), and this approach is model-independent. The vertex function approach allows one to parameterize aTGCs, and the parameters of these couplings can be constrained experimentally. This work examines the process of $$Z$$ boson production with a photon in $$pp$$ collisions, since it has a high sensitivity to neutral triple gauge-boson couplings (nTGCs) $$ZZ\gamma$$ and $$Z\gamma\gamma$$ , which are zero in the SM. Expected one-dimensional limits are set on 12 vertex parameters under the conditions of LHC Run II and Run III. There are four parameters among them that have never been studied by the high energy physics experiments before. A problem of unitarity violation is also considered for all parameters.