750 GeV diphoton excess and a dark matter messenger at the Galactic Center

doi:http://dx.doi.org/10.1103/PhysRevD.93.115006

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	750 GeV diphoton excess and a dark matter messenger at the Galactic Center
	Zhou, YF; Huang, XJ; Zhang, WH; Huang, XJ (reprint author), Chinese Acad Sci, Inst Theoret Phys, Key Lab Theoret Phys, Beijing 100190, Peoples R China.
刊名	PHYSICAL REVIEW D
	2016
卷号	93 期号:11 页码:115006
DOI	http://dx.doi.org/10.1103/PhysRevD.93.115006
英文摘要	The first data from the LHC run 2 have shown a possible excess in diphoton events with invariant mass similar to 750 GeV, suggesting the existence of a new resonance which may decay dominantly into dark matter (DM) particles. We show in a simple model that the reported diphoton excess at the LHC is consistent with another photon excess, the 2 GeV excess in cosmic gamma-ray fluxes towards the Galactic Center observed by the Fermi-LAT. Both the excesses can be simultaneously explained by a similar to 60 GeV scalar DM particle annihilating dominantly into two gluons with a typical thermal annihilation cross section, which leads to the prediction of a width-to-mass ratio Gamma/M approximate to O(10(-2)) of the resonance. The upper limit on the dijet search at LHC run 1 leads to a lower limit on the predicted cross section for DM annihilating into gamma gamma final states (gamma gamma) greater than or similar to O(10(-30)) cm(3) s(-1). Both the predictions can be tested by the LHC, Fermi-LAT, and future experiments.
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/311006/21627]
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	Huang, XJ (reprint author), Chinese Acad Sci, Inst Theoret Phys, Key Lab Theoret Phys, Beijing 100190, Peoples R China.
推荐引用方式 GB/T 7714	Zhou, YF,Huang, XJ,Zhang, WH,et al. 750 GeV diphoton excess and a dark matter messenger at the Galactic Center[J]. PHYSICAL REVIEW D,2016,93(11):115006.
APA	Zhou, YF,Huang, XJ,Zhang, WH,&Huang, XJ .(2016).750 GeV diphoton excess and a dark matter messenger at the Galactic Center.PHYSICAL REVIEW D,93(11),115006.
MLA	Zhou, YF,et al."750 GeV diphoton excess and a dark matter messenger at the Galactic Center".PHYSICAL REVIEW D 93.11(2016):115006.