Axion-Like Particle Searches at Muon Colliders: Photon-Neutrino Signatures and Heavy-Neutral-Lepton Feasibility

Ijaz Ahmed, Waqas Ahmad, M. Tayyab Javaid +1

We study the mono-photon signature ${\mu }^{+}{\mu }^{-}\to \gamma a\to \gamma \nu \bar{\nu }$ at $3$ and $10\TeV$ muon colliders, with integrated luminosities of $1$ and $10{\mathrm{ab}}^{-1}$, in a two-coupling axi…