Abstract

We present a QCD axion model where the couplings of the axion to nucleons, electrons, and muons are naturally suppressed because of the appropriate choice of the Peccei-Quinn charges of the Standard Model fermions. We reexamine next-to-leading order corrections to the couplings of the axion with nucleons and photons and show that the axion decay constant may be as small as 107 GeV. It is also possible to suppress the coupling with the photon so that the decay constant is even smaller and minimal axiogenesis works. In this scenario, the axion has a mass above 1 eV and may be directly detected via absorption of axion dark matter. Flavor-violating axion couplings are generically predicted in our model, but we show that they may be naturally and sufficiently suppressed. We discuss the implications of the hints for anomalous cooling in several stellar environments to our model.

Details

Title
Naturally astrophobic QCD axion
Author
Badziak, Marcin 1 ; Harigaya, Keisuke 2 

 University of Warsaw, Institute of Theoretical Physics, Faculty of Physics, Warsaw, Poland (GRID:grid.12847.38) (ISNI:0000 0004 1937 1290) 
 University of Chicago, Department of Physics, Chicago, USA (GRID:grid.170205.1) (ISNI:0000 0004 1936 7822); University of Chicago, Enrico Fermi Institute, Chicago, USA (GRID:grid.170205.1) (ISNI:0000 0004 1936 7822); University of Chicago, Kavli Institute for Cosmological Physics, Chicago, USA (GRID:grid.170205.1) (ISNI:0000 0004 1936 7822); The University of Tokyo Institutes for Advanced Study, The University of Tokyo, Kavli Institute for the Physics and Mathematics of the Universe (WPI), Kashiwa, Japan (GRID:grid.26999.3d) (ISNI:0000 0001 2151 536X) 
Pages
14
Publication year
2023
Publication date
Jun 2023
Publisher
Springer Nature B.V.
e-ISSN
10298479
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2822902680
Copyright
© The Author(s) 2023. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.