Study of \(tWZj\) Signal and Its Backgrounds
摘要
The discovery of the Higgs boson and the measurement of its properties has offered opportunities to investigate the Higgs sector of nature in detail. A crucial component of the Standard Model is the top Yukawa coupling, which significantly influences the stability of the electroweak vacuum. In this study, we investigate the effects of modifying the Higgs-top Yukawa coupling using Effective Field Theory with a dimension-six operator. Specifically, we analyze the \(tWZj\) final state to study the impact of off-shell Higgs couplings on gauge boson interactions at a centre-of-mass energy of 13 TeV, focusing on proton-to-b quark collisions. As this is a background-dominated process, we use Deep Neural Network to separate the signal from the backgrounds effectively. Our preliminary study shows the effect of the top Yukawa coupling modifier \(Y_{t} { onthekinematicdistributionsofthedibosonsystemmassandthetopquarkmassin}tWZj\) production.