  In this work, we study the new physics effects arising due the presence of
anomalous $Wtb$ vertex through the semileptonic decay modes of the top-quark at
the Large Hadron Collider. An estimate on the sensitivities of the
aforementioned interaction at 5$\sigma$ CL in the context of top-quark
decay-width measurements and cross-section measurements would also be discussed
for the pre-existing 13 TeV LHC data and its projections for the proposed LHC
runs at 14 TeV, 27 TeV and 100 TeV. We also incorporate the $\mathcal
CP$-violating effects to such interactions by constructing the $\mathcal
CP$-violating asymmetries.
