  We consider the resonant production and detection of charged mesons in
existing and near-future neutrino scattering experiments with $E_\nu \lesssim
1$ TeV, characteristic of high-energy atmospheric neutrinos or collider-sourced
neutrino beams. The most promising candidate is the reaction $\bar{\nu}_e
e^-\rightarrow \rho^-\rightarrow \pi^- \pi^0$. We discuss detection prospects
at FASER$\nu$, the LHC's forward physics facility with nuclear emulsion
(FASER$\nu$2) and liquid argon detectors (FLArE) and estimate the number of
expected resonance-mediated events in the existing data set of IceCube. We also
outline possible detection strategies for the different experimental
environments. We predict dozens of events at the forward physics facility and
identify cuts with order one signal efficiency that could potentially suppress
backgrounds at FASER$\nu$, yielding a signal-to-background ratio larger than 1.
Antineutrino-induced $s$-channel meson resonances are yet unobserved Standard
Model scattering processes which offer a realistic target for near-term
experiments.
