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Axion mass prediction from minimal grand unification

Di Luzio, Luca; Ringwald, Andreas; Tamarit, Carlos

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Luca Di Luzio

Andreas Ringwald

Carlos Tamarit


We propose a minimal realization of the Peccei-Quinn mechanism in a realistic SU(5) model, where the axion mass is directly connected to the grand unification scale. Accounting for constraints from proton decay, collider searches and gauge coupling unification, we predict the axion mass ma ∈ ½4.8; 6.6 neV. The upper bound relaxes to ma < 330 neV for a tuned flavor structure of the proton decay operators. The predicted mass window will be complementarily probed by the axion dark matter experiments ABRACADABRA and CASPER-Electric, which could provide indirect evidence for the scale of grand unification before the observation of proton decay.


Di Luzio, L., Ringwald, A., & Tamarit, C. (2018). Axion mass prediction from minimal grand unification. Physical Review D, 98(9), Article 095011.

Journal Article Type Article
Online Publication Date Nov 12, 2018
Publication Date Nov 12, 2018
Deposit Date Nov 13, 2018
Publicly Available Date Nov 13, 2018
Journal Physical Review D
Print ISSN 2470-0010
Electronic ISSN 2470-0029
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 98
Issue 9
Article Number 095011


Published Journal Article (541 Kb)

Publisher Licence URL

Copyright Statement
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

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