  The associated production of a Higgs boson and a top-quark pair, $t{\bar t}
H$, in proton-proton collisions is addressed in this paper for a center of mass
energy of 13TeV at the LHC. Dileptonic final states of $t{\bar t}H$ events with
two oppositely charged leptons and four jets from the decays $t\rightarrow bW^+
\rightarrow b \ell^+\nu_\ell$, $\bar{t}\rightarrow \bar{b}W^- \rightarrow
\bar{b} \ell^-\bar{\nu}_\ell$ and $h\rightarrow b\bar{b}$, are used. Signal
events, generated with MadGraph5_aMC@NLO, are fully reconstructed by applying a
kinematic fit. New angular distributions of the decay products as well as
angular asymmetries are explored in order to improve discrimination of $t{\bar
t} H$ signal events over the dominant irreducible background contribution,
$t{\bar t}b{\bar b}$. Even after the full kinematic fit reconstruction of the
events, the proposed angular distributions and asymmetries are still quite
different in the $t\bar{t}H$ signal and the dominant background
($t\bar{t}b\bar{b}$).
