Discrete Multi-Quantum Positron-Molecule Annihilation Resonances

The interaction of low-energy positrons (antimatter) with molecules is governed by Vibrational Feshbach Resonances (VFR). In this talk, I will present high-resolution annihilation spectra revealing a landscape dominated by discrete multi-quantum vibrational resonances. This challenges the standard view, which treats such multi-mode effects as a featureless continuum rather than distinct resonant peaks. I will discuss how these states are enhanced by the absence of "escape channels," effectively "locking" the positron in a transient bound state. A broader perspective on these findings, governing antimatter-matter interactions, will be discussed.