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Tang, Y; Wu, YL; Tang, Y (reprint author), Korea Inst Adv Study, Seoul 02455, South Korea.
Pure gravitational dark matter, its mass and signatures
Source PublicationPHYSICS LETTERS B
Language英语
AbstractIn this study, we investigate a scenario that dark matter (DM) has only gravitational interaction. In the framework of effective field theory of gravity, we find that DM is still stable at tree level even if there is no symmetry to protect its longevity, but could decay into standard model particles due to gravitational loop corrections. The radiative corrections can lead to both higher-and lower-dimensional effective operators. We also first explore how DM can be produced in the early universe. Through gravitational interaction at high temperature, DM is then found to have mass around TeV less than or similar to m(X) less than or similar to 10(11) GeV to get the right relic abundance. When DM decays, it mostly decays into gravitons, which could be tested by current and future CMB experiments. We also estimate the resulting fluxes for cosmic rays, gamma-ray and neutrino. (C) 2016 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP(3).
2016
Volume758Pages:402-406
Subject AreaAstronomy & Astrophysics ; Physics
DOIhttp://dx.doi.org/10.1016/j.physletb.2016.05.045
Indexed BySCI
Funding OrganizationNational Research Foundation of Korea [NRF-2015R1A2A1A05001869] ; National Research Foundation of Korea [NRF-2015R1A2A1A05001869] ; National Research Foundation of Korea [NRF-2015R1A2A1A05001869] ; National Research Foundation of Korea [NRF-2015R1A2A1A05001869]
Citation statistics
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/21596
Collection理论物理所科研产出_SCI论文
Corresponding AuthorTang, Y (reprint author), Korea Inst Adv Study, Seoul 02455, South Korea.
Recommended Citation
GB/T 7714
Tang, Y,Wu, YL,Tang, Y . Pure gravitational dark matter, its mass and signatures[J]. PHYSICS LETTERS B,2016,758:402-406.
APA Tang, Y,Wu, YL,&Tang, Y .(2016).Pure gravitational dark matter, its mass and signatures.PHYSICS LETTERS B,758,402-406.
MLA Tang, Y,et al."Pure gravitational dark matter, its mass and signatures".PHYSICS LETTERS B 758(2016):402-406.
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