Speaker
Description
In this report the model-independent effective field theory phenomenology is used to parameterize the anomalous couplings in the Lagrangian with higher dimensional operators. Setting limits on these operator's coefficients (EFT coupling constants) leads to new physics constraints. There are 2 terms of new physics are contained in the model: linear (interference) and quadratic. These terms were generated using decomposition method in MC event generator MG5_aMC.
In the classical version of setting these limits, all background processes are considered as non-depending on coefficients. However in general case one or several backgrounds can be affected by non-zero EFT coupling constants. This report presents the way of accounting such background processes in limits setting. As an example the electroweak $Z\gamma$ production is considered, since this process is extremely sensitive to anomalous quartic gauge couplings.
