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arXiv 1601.06374hep-phhep-ex
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一峰还是双峰?750 GeV双光子过剩与复杂介体的暗物质

One Bump or Two Peaks? The 750 GeV Diphoton Excess and Dark Matter with a Complex Mediator

Qing-Hong Cao, Yin-Qiang Gong, Xing Wang, Bin Yan, Li Lin Yang

摘要:

我们认为,最近观察到的过剩的双光子不变的质谱约750 GeV的可能性是由于两个狭窄的标量。我们证明,只要两个标量表现出适当的质量分裂,没有必要引入不可见的衰变模式来扩大宽度。然而,我们调查这两个标量的暗物质在玩具模型与马约拉纳费米子暗物质候选人的可能联系。我们探讨了两个标量宽度的宽度有多大,可以考虑到对撞机和暗物质实验的各种约束。引入两个标量消除了双光子产生和暗物质约束之间的紧张关系。

英文摘要:

We consider the possibility that the recently observed excess in the diphoton invariant mass spectrum around 750 GeV is due to two narrow scalars. We demonstrate that there is no need to introduce invisible decay modes to enlarge the widths as long as the two scalars exhibit an appropriate mass splitting. Nevertheless we investigate the possible connection of these two scalars to the dark matter in a toy model with a Majorana fermionic dark matter candidate. We explore how large the widths of the two scalar widths could be taking into account various constraints from collider and dark matter experiments. Introducing two scalars alleviates the tension between the diphoton production and dark matter constraints.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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