ITP OpenIR  > 理论物理所2015年知识产出
Probing gravitational dark matter
Ren, J; He, HJ; Ren, J (reprint author), Tsinghua Univ, Inst Modern Phys, Beijing 100084, Peoples R China.
2015
发表期刊JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
期号3页码:52
文章类型Article
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.
关键词Dark Matter Theory Quantum Gravity Phenomenology
学科领域Astronomy & Astrophysics ; Physics
资助者National NSF of China [11275101, 11135003] ; National NSF of China [11275101, 11135003] ; National Basic Research Program [2010CB833000] ; National Basic Research Program [2010CB833000] ; National NSF of China [11275101, 11135003] ; National NSF of China [11275101, 11135003] ; National Basic Research Program [2010CB833000] ; National Basic Research Program [2010CB833000]
DOIhttp://dx.doi.org/10.1088/1475-7516/2015/03/052
关键词[WOS]EQUIVALENCE THEOREM ; PRECISE FORMULATION ; STANDARD MODEL ; ATLAS DETECTOR ; HIGGS-BOSON ; SEARCH ; ENERGIES ; LHC
收录类别SCI
语种英语
资助者National NSF of China [11275101, 11135003] ; National NSF of China [11275101, 11135003] ; National Basic Research Program [2010CB833000] ; National Basic Research Program [2010CB833000] ; National NSF of China [11275101, 11135003] ; National NSF of China [11275101, 11135003] ; National Basic Research Program [2010CB833000] ; National Basic Research Program [2010CB833000]
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
引用统计
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/21074
专题理论物理所2015年知识产出
通讯作者Ren, J (reprint author), Tsinghua Univ, Inst Modern Phys, Beijing 100084, Peoples R China.
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Ren, J,He, HJ,Ren, J . Probing gravitational dark matter[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2015(3):52.
APA Ren, J,He, HJ,&Ren, J .(2015).Probing gravitational dark matter.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(3),52.
MLA Ren, J,et al."Probing gravitational dark matter".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .3(2015):52.
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