Asymmetric dark matter in the Sun and diphoton excess at the LHC
Asymmetric dark matter in the Sun and diphoton excess at the LHC
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DOI：
10.1103/physrevd.94.025001
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发表时间：
2015-12
影响因子：
5
通讯作者：
P. P. Dev-P.;D. Teresi
中科院分区：
文献类型：
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作者：
P. P. Dev-P.;D. Teresi
最近有人指出，动量依赖耦合的非对称暗物质（ADM）与核子可以解释日震观测和标准太阳模型的预测之间的广泛分歧。在本文中，我们提出了一个最小的简化ADM模型组成的标量和赝标量介体，除了狄拉克费米子DM，产生这样的动量依赖的相互作用。值得注意的是，质量约为750 GeV的赝标量可以同时解释太阳异常和最近的双光子过剩观测到的ATLAS和CMS实验在早期s=13 TeV的LHC数据。在这个框架中，共振的总宽度自然很大，正如ATLAS实验所建议的，因为共振主要衰减到ADM对。该模型预测存在一个新的光标量在GeV范围内，与夸克相互作用，并观察到的dijet，monojet，和TT签名的750 GeV共振在大型强子对撞机。
It has been recently pointed out that a momentum-dependent coupling of the asymmetric dark matter (ADM) with nucleons can explain the broad disagreement between helioseismological observables and the predictions of standard solar models. In this paper, we propose a minimal simplified ADM model consisting of a scalar and a pseudoscalar mediator, in addition to a Dirac fermionic DM, for generating such momentum-dependent interactions. Remarkably, the pseudoscalar with mass around 750 GeV can simultaneously explain the solar anomaly and the recent diphoton excess observed by both ATLAS and CMS experiments in the early s=13 TeV LHC data. In this framework, the total width of the resonance is naturally large, as suggested by the ATLAS experiment, since the resonance mostly decays to the ADM pair. The model predicts the existence of a new light scalar in the GeV range, interacting with quarks, and observable dijet, monojet, and tt signatures for the 750 GeV resonance at the LHC.