Realizing dark matter and Higgs inflation in light of LHC diphoton excess

doi:10.1016/j.physletb.2016.04.008

	Realizing dark matter and Higgs inflation in light of LHC diphoton excess
	Ge, Shao-Feng 1; He, Hong-Jian 2,3,4; Ren, Jing 5; Xianyu, Zhong-Zhi 6,7
刊名	PHYSICS LETTERS B
	2016-06-10
卷号	757 页码:480-492
关键词	LHC New resonance Dark matter Higgs inflation
ISSN号	0370-2693
DOI	10.1016/j.physletb.2016.04.008
英文摘要	LHC Run-2 has provided intriguing di-photon signals of a new resonance around 750 GeV, which, if not due to statistical fluctuations, must call for new physics beyond the standard model (SM) at TeV scale. We propose a minimal extension of the SM with a complex singlet scalar S and a doublet of vector-like quarks. The scalar sector respects CP symmetry, with its CP-odd imaginary component chi providing a natural dark matter (DM) candidate. The real component of S serves as the new resonance (750GeV) and explains the diphoton excess of the LHC Run-2. The new scalar degrees of freedom of S help to stabilize the Higgs vacuum, and can realize the Higgs inflation around GUT scale, consistent with the current cosmological observations. We construct two representative samples A and B of our model for demonstration. We study the mono jet signals of DM production from invisible decays Re(S) -> chi chi at the LHC Run-2. We further derive the DM relic density bound, and analyze constraints from the direct and indirect DM detections. (C) 2016 The Authors. Published by Elsevier B.V.
资助项目	National Natural Science Foundation of China[11275101] ; National Natural Science Foundation of China[11135003] ; National Basic Research Program[2010CB833000] ; Tsinghua University[20141081211]
WOS关键词	STANDARD MODEL ; ATLAS DETECTOR ; PP COLLISIONS ; ROOT-S=8 TEV ; FINAL-STATES ; BOSON ; SEARCH ; RESONANCE ; PHYSICS ; MASS
WOS研究方向	Astronomy & Astrophysics ; Physics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000376800300067
资助机构	National Natural Science Foundation of China ; National Basic Research Program ; Tsinghua University
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/42699]
专题	中国科学院近代物理研究所
通讯作者	He, Hong-Jian
作者单位	1.Max Planck Inst Kernphys, D-69117 Heidelberg, Germany 2.Tsinghua Univ, Inst Modern Phys, Beijing 100084, Peoples R China 3.Tsinghua Univ, Ctr High Energy Phys, Beijing 100084, Peoples R China 4.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China 5.Univ Toronto, Dept Phys, 60 St George St, Toronto, ON M5S 1A7, Canada 6.Harvard Univ, Ctr Math Sci & Applicat, Cambridge, MA 02138 USA 7.Harvard Univ, Dept Phys, Cambridge, MA 02138 USA
推荐引用方式 GB/T 7714	Ge, Shao-Feng,He, Hong-Jian,Ren, Jing,et al. Realizing dark matter and Higgs inflation in light of LHC diphoton excess[J]. PHYSICS LETTERS B,2016,757:480-492.
APA	Ge, Shao-Feng,He, Hong-Jian,Ren, Jing,&Xianyu, Zhong-Zhi.(2016).Realizing dark matter and Higgs inflation in light of LHC diphoton excess.PHYSICS LETTERS B,757,480-492.
MLA	Ge, Shao-Feng,et al."Realizing dark matter and Higgs inflation in light of LHC diphoton excess".PHYSICS LETTERS B 757(2016):480-492.