The ALP miracle revisited

Daido, Ryuji; Takahashi, Fuminobu; Yin, Wen

doi:10.1007/JHEP02(2018)104

The ALP miracle revisited

Ryuji Daido
(
- Tohoku U.
)
,
Fuminobu Takahashi
(
- Tohoku U. and
- Tokyo U., IPMU
)
,
Wen Yin
(
- Beijing, Inst. High Energy Phys.
)

Oct 30, 2017

27 pages

Published in:

JHEP 02 (2018) 104

e-Print:

1710.11107 [hep-ph]

DOI:

10.1007/JHEP02(2018)104

Report number:

TU-1049,
IPMU17-0145

View in:

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Abstract: (Springer)

We revisit the ALP miracle scenario where the inflaton and dark matter are unified by a single axion-like particle (ALP). We first extend our previous analysis on the inflaton dynamics to identify the whole viable parameter space consistent with the CMB observation. Then, we evaluate the relic density of the ALP dark matter by incorporating uncertainties of the model-dependent couplings to the weak gauge bosons as well as the dissipation effect. The preferred ranges of the ALP mass and coupling to photons are found to be 0.01 ≲ m

_{ϕ}

≲ 1 eV and

{g}_{\phi \gamma \gamma }=\mathcal{O}\left(1{0}^{-11}\right)

GeV

^{−1}

, which slightly depend on these uncertainties. Interestingly, the preferred regions are within reach of future solar axion helioscope experiments, IAXO and TASTE, and laser-based stimulated photon-photon collider experiments. We also discuss possible extensions of the ALP miracle scenario by introducing interactions of the ALP with fermions.

Note:

26 pages, 8 figures; matched with the published version

Beyond Standard Model
Cosmology of Theories beyond the SM
Discrete Symmetries
Thermal Field Theory
axion: solar
dark matter: density
cosmic background radiation
axion-like particles
two-photon: coupling
dark matter: relic density

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Figures(8)

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