Anomalous neutral gauge boson interactions and simplified models

Abstract

Trilinear Z boson interactions are sensitive probes both of new sources of CP violation in physics beyond the standard model and of new particle thresholds. Measurements of trilinear Z interactions are typically interpreted in the frameworks of anomalous couplings and effective field theory, both of which require care in interpretation. To obtain a quantitative picture of the power of these measurements when interpreted in a TeV-scale context, we investigate the anatomy of ZZZ interactions and consider two minimal and perturbative simplified models which induce such interactions through new scalar and fermion loops at the weak scale, focusing on ZZ and vector boson fusion-induced Zjj product..