Opening up the QCD axion window
We present a new mechanism to deplete the energy density of the QCD axion, making decay constants as high as fa ≃ 1017 GeV viable for generic initial conditions. In our setup, the axion couples to a massless dark photon with a coupling that is moderately stronger than the axion coupling to gluons. D...
Main Authors: | Agrawal, Prateek (Author), Marques-Tavares, Gustavo (Author), Xue, Wei (Contributor) |
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Other Authors: | Massachusetts Institute of Technology. Department of Physics (Contributor) |
Format: | Article |
Language: | English |
Published: |
Springer Berlin Heidelberg,
2019-01-04T18:22:34Z.
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Subjects: | |
Online Access: | Get fulltext |
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