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We propose a strategy for new physics searches in channels which contain aboosted $Z$ boson in the final state. Our proposal exploits the previouslyoverlooked advantages of boosted $Z\rightarrow \nu \bar{\nu}$ topologies, wherecollimated neutrinos result in signals with large missing energy. We illustratethe advantage of this channel in a case study of singly produced TeV scalecharge 2/3 fermionic top partners ($T'$) which decay to $t+Z$. A comparisonwith the di-leptonic channel reveals that signals with missing energy offersuperior probes of new physics at TeV scales, despite the large $t\bar{t}$backgrounds. The effect can be attributed to a factor of $\sim 3$ enhancementin the signal cross section, coming from the branching ratio of $Z\rightarrow\nu \bar{\nu}$. We exploit the unique event topology of singly produced toppartners to suppress the $t\bar{t}$ background, as well as further improve onthe existing proposals to detect $T'$ in the boosted di-lepton channel. Ourconclusions on advantages of $Z\rightarrow \nu \bar{\nu}$ can be extended tomost physics searches which utilize a boosted $Z$ boson in the final state.

Discovering Heavy New Physics in Boosted $Z$ Channels: $Z \rightarrow l ^+l^- $ vs. $ Z \rightarrow \nu \bar{\nu}$