Heavy QCD Axions at High-Energy Muon Colliders

2025/09/12 by Bedi, Ravneet, Gherghetta, Tony, Kumar, Soubhik +2 · 3 citations
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)

paper · doi:10.48550/arxiv.2509.10605

Abstract

We study the physics potential of heavy QCD axions at high-energy muon colliders. Unlike typical axion-like particles, heavy QCD axions solve the strong CP problem with phenomenology driven by the anomalous gluon (aG\widetilde G) couplings. Several ultraviolet scenarios are presented in which QCD axions with TeV-scale masses and decay constants arise consistently with a solution to both the strong CP problem and the axion quality problem. We perform a detailed collider analysis for both a 3 and 10~TeV muon collider, focusing on hadronic axion decays that gives rise to a dijet-resonance signature. Our projections for the axion discovery reach in the multi-TeV mass range demonstrate that a muon collider can significantly extend sensitivity to heavy QCD axions compared to existing experiments.

Citations

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Cited by

• Discovery prospects for photophobic axion-like particles at a 100 TeV proton--proton collider
• Axion couplings in Orbifold GUTs
• Discovery prospects for photophobic axion-like particles in the WWjj final state at the High-Luminosity LHC

Related

• Axion-Like Particles at High Energy Muon Colliders -- A White paper for Snowmass 2021
• Interplay of ALP Couplings at a Muon Collider
• Probe of axion-like particles in vector boson scattering at a muon collider
• A collider observable QCD axion
• Heavy QCD axion dark matter from avoided level crossing