Probing axion-photon coupling from the resonant conversion of QCD axion and ALP dark matter

Shu Yu Ho, Ken'Ichi Saikawa, Fuminobu Takahashi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We refine the adiabatic condition of the conversion between the QCD axion and axionlike particle (ALP) at level crossing. We then focus on a scenario where the ALP produced by the adiabatic conversion of the QCD axion explains the observed dark matter abundance. Interestingly, we find that the ALP decay constant can be much smaller than the ordinary case in which the ALP is produced by the realignment mechanism. As a consequence, the ALP-photon coupling is enhanced by a few orders of magnitude, which is advantageous for the future ALP and axion-search experiments using the ALP-photon coupling.

Original languageEnglish
Title of host publicationProceedings of the 14th Patras Workshop on Axions, WIMPs and WISPs, PATRAS 2018
EditorsTodd Kozlowski
PublisherVerlag Deutsches Elektronen-Synchrotron
Pages29-32
Number of pages4
ISBN (Electronic)9783945931226
DOIs
Publication statusPublished - 2018 Jan 1
Externally publishedYes
Event14th Patras Workshop on Axions, WIMPs and WISPs, PATRAS 2018 - Hamburg, Germany
Duration: 2018 Jun 182018 Jun 22

Publication series

NameProceedings of the 14th Patras Workshop on Axions, WIMPs and WISPs, PATRAS 2018

Conference

Conference14th Patras Workshop on Axions, WIMPs and WISPs, PATRAS 2018
CountryGermany
CityHamburg
Period18/6/1818/6/22

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Atomic and Molecular Physics, and Optics

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