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

Shu Yu Ho; Ken'Ichi Saikawa; Fuminobu Takahashi

doi:10.3204/DESY-PROC-2018-03/Ho_Shu-Yu

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

Shu Yu Ho, Ken'Ichi Saikawa, Fuminobu Takahashi

SCI - Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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 language	English
Title of host publication	Proceedings of the 14th Patras Workshop on Axions, WIMPs and WISPs, PATRAS 2018
Editors	Todd Kozlowski
Publisher	Verlag Deutsches Elektronen-Synchrotron
Pages	29-32
Number of pages	4
ISBN (Electronic)	9783945931226
DOIs	https://doi.org/10.3204/DESY-PROC-2018-03/Ho_Shu-Yu
Publication status	Published - 2018
Event	14th Patras Workshop on Axions, WIMPs and WISPs, PATRAS 2018 - Hamburg, Germany Duration: 2018 Jun 18 → 2018 Jun 22

Publication series

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

Conference

Conference	14th Patras Workshop on Axions, WIMPs and WISPs, PATRAS 2018
Country/Territory	Germany
City	Hamburg
Period	18/6/18 → 18/6/22

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Ho, S. Y., Saikawa, KI., & Takahashi, F. (2018). Probing axion-photon coupling from the resonant conversion of QCD axion and ALP dark matter. In T. Kozlowski (Ed.), Proceedings of the 14th Patras Workshop on Axions, WIMPs and WISPs, PATRAS 2018 (pp. 29-32). (Proceedings of the 14th Patras Workshop on Axions, WIMPs and WISPs, PATRAS 2018). Verlag Deutsches Elektronen-Synchrotron. https://doi.org/10.3204/DESY-PROC-2018-03/Ho_Shu-Yu

Ho, Shu Yu ; Saikawa, Ken'Ichi ; Takahashi, Fuminobu. / Probing axion-photon coupling from the resonant conversion of QCD axion and ALP dark matter. Proceedings of the 14th Patras Workshop on Axions, WIMPs and WISPs, PATRAS 2018. editor / Todd Kozlowski. Verlag Deutsches Elektronen-Synchrotron, 2018. pp. 29-32 (Proceedings of the 14th Patras Workshop on Axions, WIMPs and WISPs, PATRAS 2018).

@inproceedings{cb27c1ac003c4247981dc2d71d3492c9,

title = "Probing axion-photon coupling from the resonant conversion of QCD axion and ALP dark matter",

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.",

author = "Ho, {Shu Yu} and Ken'Ichi Saikawa and Fuminobu Takahashi",

note = "Publisher Copyright: {\textcopyright} Proceedings of the 14th Patras Workshop on Axions, WIMPs and WISPs, PATRAS 2018. All rights reserved.; 14th Patras Workshop on Axions, WIMPs and WISPs, PATRAS 2018 ; Conference date: 18-06-2018 Through 22-06-2018",

year = "2018",

doi = "10.3204/DESY-PROC-2018-03/Ho_Shu-Yu",

language = "English",

series = "Proceedings of the 14th Patras Workshop on Axions, WIMPs and WISPs, PATRAS 2018",

publisher = "Verlag Deutsches Elektronen-Synchrotron",

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editor = "Todd Kozlowski",

booktitle = "Proceedings of the 14th Patras Workshop on Axions, WIMPs and WISPs, PATRAS 2018",

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Ho, SY, Saikawa, KI & Takahashi, F 2018, Probing axion-photon coupling from the resonant conversion of QCD axion and ALP dark matter. in T Kozlowski (ed.), Proceedings of the 14th Patras Workshop on Axions, WIMPs and WISPs, PATRAS 2018. Proceedings of the 14th Patras Workshop on Axions, WIMPs and WISPs, PATRAS 2018, Verlag Deutsches Elektronen-Synchrotron, pp. 29-32, 14th Patras Workshop on Axions, WIMPs and WISPs, PATRAS 2018, Hamburg, Germany, 18/6/18. https://doi.org/10.3204/DESY-PROC-2018-03/Ho_Shu-Yu

Probing axion-photon coupling from the resonant conversion of QCD axion and ALP dark matter. / Ho, Shu Yu; Saikawa, Ken'Ichi; Takahashi, Fuminobu.
Proceedings of the 14th Patras Workshop on Axions, WIMPs and WISPs, PATRAS 2018. ed. / Todd Kozlowski. Verlag Deutsches Elektronen-Synchrotron, 2018. p. 29-32 (Proceedings of the 14th Patras Workshop on Axions, WIMPs and WISPs, PATRAS 2018).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Probing axion-photon coupling from the resonant conversion of QCD axion and ALP dark matter

AU - Ho, Shu Yu

AU - Saikawa, Ken'Ichi

AU - Takahashi, Fuminobu

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Y1 - 2018

N2 - 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.

AB - 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.

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BT - Proceedings of the 14th Patras Workshop on Axions, WIMPs and WISPs, PATRAS 2018

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Ho SY, Saikawa KI, Takahashi F. Probing axion-photon coupling from the resonant conversion of QCD axion and ALP dark matter. In Kozlowski T, editor, Proceedings of the 14th Patras Workshop on Axions, WIMPs and WISPs, PATRAS 2018. Verlag Deutsches Elektronen-Synchrotron. 2018. p. 29-32. (Proceedings of the 14th Patras Workshop on Axions, WIMPs and WISPs, PATRAS 2018). doi: 10.3204/DESY-PROC-2018-03/Ho_Shu-Yu

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

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