Expected sensitivity on the anomalous quartic neutral gauge couplings in γγ collisions at the CLIC

Abstract

The non-Abelian gauge structure of the Standard Model (SM) implies the presence of multi-boson self-interactions. Precise measurements of these interactions allow testing the nature of the SM and new physics contributions arising from the beyond SM. The investigation of these interactions can be approached in a model-independent manner using an effective theory approach, which forms the main motivation of this study. In this paper, we examine the anomalous neutral quartic gauge couplings through the process γγ → ZZ at the Compact Linear Collider with the center-of-mass energy of √ s 3 TeV and integrated luminosity of L 5 ab−1. The anomalous neutral quartic gauge couplings are implemented into FeynRules to generate a UFO module inserted into Madgraph to create background and signal events. These events are passed through Pythia 8 for parton showering and Delphes to include realistic detector effects. We obtain that the sensitivities on the anomalous quartic neutral gauge couplings with 95% Confidence Level are given as: fT 0/ 4 [−1.06; 1.08] × 10−3 TeV−4, fT 1/ 4 [−1.06; 1.08] × 10−3 TeV−4, fT 2/ 4 [−1.06; 1.08]×10−3 TeV−4, fT 0/ 4 [−1.06; 1.08]×10−3 TeV−4, fT 5/ 4 [−4.08; 4.08]×10−4 TeV−4 and fT 8/ 4 [−1.10; 1.10]×10−4 TeV−4.Our results on the anomalous quartic neutral gauge couplings are set to amore stringent sensitivity concerning the recent experimental limits.