New calculation of semiexclusive axionlike particle production at the LHC

We present a new calculation of axionlike particle (ALP) production in the semiexclusive photon-initiated (PI) channel, that is either with intact outgoing protons or rapidity gaps final state, and no color flow between colliding LHC protons. This first full treatment this process, accounting for both possibility proton dissociation survival factor probability additional proton-proton interactions, including its kinematic process dependence. expected event yields case one are required to be registered forward detectors installed association ATLAS CMS. find can sensitive currently unprobed regions ALP mass ALP-photon coupling, particular intermediate region. Our provided publicly available superchic 4 Monte Carlo (MC) generator, passed general purpose MC showering hadronization state.