Probing gravitational dark matter

doi:10.1088/1475-7516/2015/03/052

	Probing gravitational dark matter
	Ren, Jing 1,2,3; He, Hong-Jian 1,2,4,5
刊名	JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
	2015-03-01
页码	31
关键词	dark matter theory quantum gravity phenomenology
ISSN号	1475-7516
DOI	10.1088/1475-7516/2015/03/052
英文摘要	So far all evidences of dark matter (DM) come from astrophysical and cosmological observations, due to the gravitational interactions of DM. It is possible that the true DM particle in the universe joins gravitational interactions only, but nothing else. Such a Gravitational DM (GDM) may act as a weakly interacting massive particle (WIMP), which is conceptually simple and attractive. In this work, we explore this direction by constructing the simplest scalar GDM particle chi(s). It is a Z(2) odd singlet under the standard model (SM) gauge group, and naturally joins the unique dimension-4 interaction with Ricci curvature, xi(s)chi R-2(s), where xi(s) the dimensionless nonminimal coupling. We demonstrate that this gravitational interaction xi(s)chi R-2(s), together with Higgs-curvature nonminimal coupling term xi H-h(dagger) HR, induces effective couplings between chi(2)(s) and SM fields, and can account for the observed DM thermal relic abundance. We analyze the annihilation cross sections of GDM particles and derive the viable parameter space for realizing the DM thermal relic density. We further study the direct/indirect detections and the collider signatures of such a scalar GDM. These turn out to be highly predictive and testable.
资助项目	National NSF of China[11275101] ; National NSF of China[11135003] ; National Basic Research Program[2010CB833000]
WOS关键词	EQUIVALENCE THEOREM ; PRECISE FORMULATION ; STANDARD MODEL ; ATLAS DETECTOR ; HIGGS-BOSON ; SEARCH ; ENERGIES ; LHC
WOS研究方向	Astronomy & Astrophysics ; Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000355633800052
资助机构	National NSF of China ; National Basic Research Program
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/39895]
专题	中国科学院近代物理研究所
通讯作者	Ren, Jing
作者单位	1.Tsinghua Univ, Inst Modern Phys, Beijing 100084, Peoples R China 2.Tsinghua Univ, Ctr High Energy Phys, Beijing 100084, Peoples R China 3.Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada 4.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China 5.Chinese Acad Sci, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Ren, Jing,He, Hong-Jian. Probing gravitational dark matter[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2015:31.
APA	Ren, Jing,&He, Hong-Jian.(2015).Probing gravitational dark matter.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,31.
MLA	Ren, Jing,et al."Probing gravitational dark matter".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2015):31.