ALPs at Colliders
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New pseudo-scalars, often called axion-like particles (ALPs), abound in model-building and are often associated with the breaking of a new symmetry. Traditional searches and indirect bounds are limited to light axions, typically in or below the KeV range for ALPs coupled to photons. We present collider bounds on ALPs from mono-$\gamma$, tri-$\gamma$ and mono-jet searches in a model independent fashion, as well as the prospects for the LHC and future machines. We find that they are complementary to existing searches, as they are sensitive to heavier ALPs and have the capability to cover an otherwise inaccessible region of parameter space. We also show that, assuming certain model dependent correlations between the ALP coupling to photons and gluons as well as considering the validity of the effective description of ALP interactions, mono-jet searches are in fact more suitable and effective in indirectly constraining ALP scenarios.
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Cited by 9 Pith papers
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Sensitivity of the FCC-ee to axion-like particles at different center-of-mass energies
FCC-ee can reach ALP-photon couplings of a few 10^{-6} GeV^{-1} at the Z pole and 10^{-5} GeV^{-1} at higher runs for masses 5-320 GeV in the associated production plus diphoton decay channel.
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Sensitivity of the FCC-ee to axion-like particles at different center-of-mass energies
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