Multicomponent dark matter in the light of CALET and DAMPE - INSPIRE

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Multicomponent dark matter in the light of CALET and DAMPE

Chao-Qiang Geng
(
- CUPT, Chongqing and
- Taiwan, Natl. Tsing Hua U. and
- NCTS, Hsinchu
)
,
Da Huang
(
- NAOC, Beijing and
- Warsaw U. and
- Aveiro U.
)
,
Lu Yin
(
- Taiwan, Natl. Tsing Hua U.
)

May 24, 2019

23 pages

Published in:

Nucl.Phys.B 959 (2020) 115153

Published: Oct, 2020

e-Print:

1905.10136 [hep-ph]

DOI:

10.1016/j.nuclphysb.2020.115153

Experiments:

CALET,
DAMPE

View in:

ADS Abstract Service

reference search3 citations

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Abstract: (Elsevier)

In the light of the latest measurements on the total e++e− flux by CALET and DAMPE experiments, we revisit the multicomponent leptonically decaying dark matter (DM) explanations to the cosmic-ray electron/positron excesses observed previously. Especially, we use the single and double-component DM models to explore the compatibility of the AMS-02 positron fraction with the new CALET or DAMPE data. As a result, for either the AMS-02 + CALET dataset or the AMS-02 + DAMPE one, both the single and double-component DM models can provide reasonable fits. If we further take into the diffuse γ -ray constraints from Fermi-LAT, only the double-component DM models are allowed.

Note:

23 pages, 4 figures; Comments are added and typos are fixed; published version

electron: cosmic radiation
dark matter: leptonic decay
DAMPE
CALET
electron: flux
positron: cosmic radiation
positron: flux
flux: measurement methods
cosmic radiation: flux
numerical calculations

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Figures(8)

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