Double Z-boson production in proton proton collisions

Ozan Semin

The Standard Model of particle physics has been the most successful theory of fundamental particles for a significant period, allowing for the calculation of fundamental constants and observables resulting from collisions, which can be compared to experimental data. However, it still faces several unresolved issues that beyond the Standard Model theories aim to address. To identify areas in need of improvement within the Standard Model, comprehensive calculations of various observables and constants are crucial. This thesis undertakes the task of calculating observables in proton-proton collisions with emitted Z bosons at next-to-leading order (NLO) precision. Both numerical methods within specific frameworks and analytical methods are employed and compared, with a particular emphasis on comparing the results to non-perturbative simulations.