Speaker
Description
Current experimental results indicate that if axion-like particles (ALPs) indeed exist, their interactions with photons are weak over a large mass range. Therefore, we assume that ALPs do not couple to diphotons and have conducted detailed analyses on the decay mode of such heavy photophobic ALPs into boson final states ($WW, \gamma Z$) at the High-Luminosity Large Hadron Collider (HL-LHC, $ \sqrt s = 14 $TeV) and larger colliders ($\sqrt s = 100$TeV). The signal process ($WWjj,\gamma Zjj,WWW$) and its corresponding background processes are simulated. Through preselection criteria and multivariate analysis, we finally derive the discovery sensitivities for the coupling constants $g_{aWW}$ of the signal process ($WWjj,\gamma Zjj,WWW$) within the mass range of 100–4000 GeV at the $2 \sigma$ and $5 \sigma$ confidence levels, and simultaneously present the sensitivities for the product of the production cross section and branching ratio within the mass range of 100–4000 GeV. The results demonstrate that future LHC and larger colliders will have excellent detection capabilities for heavy photophobic ALPs.
