Prediction for the Anomalous ZZZ and ZZγ Couplings via two Z-boson Production at the CLIC
Abstract
The non-Abelian nature of the Standard Model (SM) entails the existence of the gauge bosons' self-interactions. The gauge bosons' self-interactions are important to test the SM and see the new physics effects. These effects can be analyzed in the effective theory approach which is the main aim of this study. We examine the ZZZ and ZZγ anomalous neutral triple gauge couplings (aNTGC) via the process e^- e^+→ZZ with both unpolarized and polarized electron beam with the √s=3 TeV at CLIC. In the final state, semi-leptonic decay of Z-bosons (Z→jj , Z→ν_l (ν_l ) ̅ ) are considered. We focused on CP-violating C_BB/Λ^4 , C_BW/Λ^4 , C_WW/Λ^4 and CP-conserving C_(B ̅W)/Λ^4 couplings. The sensitivities are obtained at 95% Confidence Level with luminosities of L_int=5 ab-1, L_int=1 ab-1 and L_int=4 ab-1 for unpolarized, 80% and -80% polarized electron beams, respectively. Obtained sensitivities on anomalous couplings are 3-20 times stringent than the current experimental limits and comparable with the related phenomenological studies in the literature.
Publisher
Karadeniz Fen Bilimleri Dergisi
Reference38 articles.
1. Aaboud, M., et al., (2018). Measurement of the Zγ→νν ̅γ production cross section in pp collisions at
√s=13 TeV with the ATLAS detector and limits on anomalous triple gauge-boson couplings. JHEP, 12, 010. 2. Alloul, A., Christensen, N.D., Degrande, C., Duhr, C., Fuks B., (2014). FeynRules 2.0- A complete toolbox
for tree-level phenomenology. Comput. Phys. Commun., 185, 2250. 3. Alwall, J., Frederix, R., Frixione, S., Hirschi, V., Maltoni, F., Mattelaer, O., Shao, H. -S., Stelzer, T., Torielli, 4. P., Zaro, M., (2014). The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations. JHEP, 07, 079. 5. Alwall, J., Herquet, M., Maltoni, F., Mattelaer, O., Stelzer, T., (2011). MadGraph 5: going beyond. JHEP, 06,
128.
|
|