Astrophobic Axions

Di Luzio, Luca; Mescia, Federico; Nardi, Enrico; Panci, Paolo; Ziegler, Robert

Abstract

We 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.

Citation

Di Luzio, L., Mescia, F., Nardi, E., Panci, P., & Ziegler, R. (2018). Astrophobic Axions. Physical Review Letters, 120(26), Article 261803. https://doi.org/10.1103/physrevlett.120.261803

• Journal Article Type: Article
• Online Publication Date: Jun 29, 2018
• Publication Date: Jun 29, 2018
• Deposit Date: Jul 12, 2018
• Publicly Available Date: Jul 12, 2018
• Journal: Physical Review Letters
• Print ISSN: 0031-9007
• Electronic ISSN: 1079-7114
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 120
• Issue: 26
• Article Number: 261803
• DOI: https://doi.org/10.1103/physrevlett.120.261803
• Public URL: https://durham-repository.worktribe.com/output/1354416