  We re-examine the discovery potential at hadron colliders of high-mass
right-handed (RH) gauge bosons $W_R$ - an inherent ingredient of Left-Right
Symmetric Models (LRSM). We focus on the regime where the $W_R$ is very heavy
compared to the heavy Majorana neutrino $N$, and investigate an alternative
signature for $W_R \rightarrow N$ decays. The produced neutrinos are highly
boosted in this mass regime. Subsequently, their decays via off-shell $W_R$
bosons to jets, i.e., $N \rightarrow \ell^\pm j j$ are highly collimated,
forming a single neutrino jet $(j_N)$. The final-state collider signature is
then $\ell^\pm j_N$, instead of the widely studied $\ell^\pm\ell^\pm jj$.
Present search strategies are not sensitive to this hierarchical mass regime
due to the breakdown of the collider signature definition. We take into account
QCD corrections beyond next-to-leading order (NLO) that are important for
high-mass Drell-Yan processes at the 13 TeV Large Hadron Collider (LHC). For
the first time, we evaluate $W_R$ production at NLO with threshold resummation
at next-to-next-to-leading logarithm (NNLL) matched to the threshold-improved
parton distributions. With these improvements, we find that a ${W_R}$ of mass
$M_{W_R} = 3~(4)~[5]$ TeV and mass ratio of $(m_N/M_{W_R})<0.1$ can be
discovered with a $5-6 \sigma$ statistical significance at 13 TeV after
${10~(100)~[2000]~\text{fb}^{-1}}$ of data. Extending the analysis to the
hypothetical 100 TeV Very Large Hadron Collider (VLHC), $5\sigma$ can be
obtained for $W_R$ masses up to $M_{W_R}=15~(30)$ with approximately
$100~\text{fb}^{-1}~(10~\text{ab}^{-1})$.
