A bstract We consider top-antitop quark (\(t\overline {t}\)) production at the Large Hadron
Collider (LHC) with subsequent decay into dileptonic and lepton plus jets final states. We …

We discuss a formalism for the spin correlations and polarizations in two-particle systems
with spins half-half, half-one and one-one, and provide the connections between the …

A bstract We present a collection of CP-odd observables for the process\(pp\to t\left (\to b
{\ell}^{+}{\nu} _ {\ell}\right)\overline {t}\left (\to\overline {b}{\ell}^{-}{\overline {\nu}} …

A bstract We study the anomalous\(t\overline {t} Z\) couplings in the\(t\overline {t} Z\)
production in leptonic final state at the 13 TeV LHC. We use the polarizations of top quarks …

There exist several recent studies of the top-quark chromoelectric dipole moment (CEDM) in
the context of searching for charge parity violating signals in top-quark pair production at the …

There are a number of studies in the literature on search for Charge-Parity (CP) violating
signals in top quark productions at the LHC. In most of these studies, ChromoMagnetic …

In this paper we consider CP-violating new-physics contributions to the decay t→ bb¯ c. We
examine the prospects for detecting such new physics at the LHC, which requires studying …

In the companion paper it is shown that there are six observables in gg→ tt¯→(bb¯ c)(b¯ ℓ
ν¯) that can be used to reveal the presence of new physics (NP) in t→ bb¯ c. In the present …

This thesis presents a measurement of the CP properties of the top-Higgs Yukawa coupling
in tiH and H events, using 139 fb of data collected by ATLAS during proton-proton collisions …

En esta tesis se abordan distintos estudios fenomenológicos de posibles extensiones en el
sector escalar del Modelo Estándar de partículas y sus interacciones (SM). En el primero de …