2020/12/31 by Luc Darmé, Federica Giacchino, Enrico Nardi +1
Physics and Astronomy · #Anomalous magnetic dipole moment #Astrophysics and Cosmic Phenomena #Collider #Coupling (piping) #Dark Matter and Cosmic Phenomena #Electron #Large Hadron Collider #Muon #Particle physics theoretical and experimental studies #Phenomenology (philosophy) #Physics beyond the Standard Model #hep-ex #hep-ph
paper · pdf · doi:10.1007/jhep06(2021)009
42 pages, 15 figures. Minor points clarified, a few typos fixed, results unchanged
openalex created_date 2020/12/21 · arxiv created 2021/04/08 · openalex publication_date 2021/06/01 · arxiv updated 2021/06/16 · openalex updated_date 2026/08/05
A bstract Axion-like particles (ALPs) can provide a portal to new states of a dark sector. We study the phenomenology of this portal when the ALP mainly decays invisibly, while its interaction with the standard model sector proceeds essentially via its coupling to electrons and/or photons. We reanalyse existing limits from various collider and beam dump experiments, including in particular ALP production via electron/positron interactions, in addition to the usual production through ALP-photon coupling. We further discuss the interplay between these limits and the intriguing possibility of explaining simultaneously the muon and electron magnetic moment anomalies. Finally, we illustrate the prospects of ALP searches at the LNF positron fixed-target experiment PADME, and the future reach of an upgraded experimental setup.