Luzio, Luca DiMescia, FedericoNardi, EnricoPanci, PaoloZiegler, Robert2019-05-032019-05-032018-06-290031-9007https://hdl.handle.net/2445/132623We propose a class of axion models with generation-dependent Peccei-Quinn charges for the known fermions that allow one to suppress the axion couplings to nucleons and electrons. Astrophysical limits are thus relaxed, allowing for axion masses up to O ( 0.1 )     eV . The axion-photon coupling remains instead sizable, so that next-generation helioscopes will be able to probe this scenario. Astrophobia unavoidably implies flavor-violating axion couplings so that experimental limits on flavor-violating processes can provide complementary probes. The astrophobic axion can be a viable dark matter candidate in the heavy mass window and can also account for anomalous energy loss in stars.6 p.application/pdfeng(c) American Physical Society, 2018Física de partículesExperimentsParticle physicsExperimentsinfo:eu-repo/semantics/article6842562019-05-03info:eu-repo/semantics/openAccess