Stathes PaganisKAI-FENG CHENPAO-TI CHANGWEI-SHU HOU2020-07-072020-07-072019https://scholars.lib.ntu.edu.tw/handle/123456789/509347Search for long-lived particles using delayed photons in proton-proton collisions at $\sqrts=$ 13 TeVjournal article10.1103/PhysRevD.100.112003