Discovery prospects for photophobic axion-like particles at a 100 TeV proton--proton collider

Zilong Ding, Jiaojiao Feng, Ying-nan Mao +2

We study heavy photophobic axion-like particles (ALPs) in the limit of an effectively vanishing diphoton coupling, $g_{a\gamma \gamma }\simeq 0$, for which diphoton production and decay are su…