@misc{misc, title  = {{Observation of Single-Top-Quark Production in Association with a Photon
  Using the ATLAS Detector}},

 url = {{http://dx.doi.org/10.1103/PhysRevLett.131.181901 }},

 year = {{2023}},

 month = {{2}},

 author = {{Collaboration ATLAS}},

 note = {{Accessed on 2025/11/20}}}