Pure gravitational dark matter, its mass and signatures

doi:http://dx.doi.org/10.1016/j.physletb.2016.05.045

CORC > 理论物理研究所 > 中国科学院理论物理研究所 > 理论物理所科研产出 > 理论物理所1978-2010年知识产出

	Pure gravitational dark matter, its mass and signatures
	Wu, YL; Tang, Y; Tang, Y (reprint author), Korea Inst Adv Study, Seoul 02455, South Korea.
刊名	PHYSICS LETTERS B
	2016
卷号	758 页码:402-406
DOI	http://dx.doi.org/10.1016/j.physletb.2016.05.045
英文摘要	In 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).
学科主题	Astronomy & Astrophysics ; Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/21596]
专题	理论物理研究所_理论物理所1978-2010年知识产出
通讯作者	Tang, Y (reprint author), Korea Inst Adv Study, Seoul 02455, South Korea.
推荐引用方式 GB/T 7714	Wu, YL,Tang, Y,Tang, Y . Pure gravitational dark matter, its mass and signatures[J]. PHYSICS LETTERS B,2016,758:402-406.
APA	Wu, YL,Tang, Y,&Tang, Y .(2016).Pure gravitational dark matter, its mass and signatures.PHYSICS LETTERS B,758,402-406.
MLA	Wu, YL,et al."Pure gravitational dark matter, its mass and signatures".PHYSICS LETTERS B 758(2016):402-406.