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750 GeV diphoton excess and a dark matter messenger at the Galactic Center
Huang, XJ; Zhang, WH; Zhou, YF; Huang, XJ (reprint author), Chinese Acad Sci, Inst Theoret Phys, Key Lab Theoret Phys, Beijing 100190, Peoples R China.
2016
发表期刊PHYSICAL REVIEW D
卷号93期号:11页码:115006
文章类型Article
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.
学科领域Astronomy & Astrophysics ; Physics
资助者NSFC [11335012, 11475237] ; NSFC [11335012, 11475237] ; NSFC [11335012, 11475237] ; NSFC [11335012, 11475237] ; NSFC [11335012, 11475237] ; NSFC [11335012, 11475237] ; NSFC [11335012, 11475237] ; NSFC [11335012, 11475237]
DOIhttp://dx.doi.org/10.1103/PhysRevD.93.115006
关键词[WOS]CP CONSERVATION ; ATLAS DETECTOR ; ROOT-S=8 TEV ; RESONANCE ; EMISSION ; SIGNAL ; GAMMA ; PSEUDOPARTICLES ; CONSTRAINTS ; PHYSICS
收录类别SCI
语种英语
资助者NSFC [11335012, 11475237] ; NSFC [11335012, 11475237] ; NSFC [11335012, 11475237] ; NSFC [11335012, 11475237] ; NSFC [11335012, 11475237] ; NSFC [11335012, 11475237] ; NSFC [11335012, 11475237] ; NSFC [11335012, 11475237]
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/311006/21627
专题理论物理所SCI论文
通讯作者Huang, XJ (reprint author), Chinese Acad Sci, Inst Theoret Phys, Key Lab Theoret Phys, Beijing 100190, Peoples R China.
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Huang, XJ,Zhang, WH,Zhou, YF,et al. 750 GeV diphoton excess and a dark matter messenger at the Galactic Center[J]. PHYSICAL REVIEW D,2016,93(11):115006.
APA Huang, XJ,Zhang, WH,Zhou, YF,&Huang, XJ .(2016).750 GeV diphoton excess and a dark matter messenger at the Galactic Center.PHYSICAL REVIEW D,93(11),115006.
MLA Huang, XJ,et al."750 GeV diphoton excess and a dark matter messenger at the Galactic Center".PHYSICAL REVIEW D 93.11(2016):115006.
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