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arXiv 0912.3797hep-phastro-ph.COhep-th
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CDMS结果对暗物质和LHC物理的意义

Implications of the CDMS result on Dark Matter and LHC physics

M. Kadastik, K. Kannike, A. Racioppi, M. Raidal

摘要:

在基于SO(10)非超对称大统一理论的标量暗物质模型中,对暗物质的电弱对称破缺(EWSB)和正确的热残余密度的要求预示了大的自旋无关直接探测截面。将CDMS信号事件解释为DM在原子核上的反冲,我们研究了这一假设对EWSB,希格斯玻色子质量和在LHC实验中直接产生标量DM的影响。结果表明,这种解释表明,相对轻的DM,M_DM ~ O(100)GeV,在LHC与自旋无关的直接DM检测截面相关的大对产生截面。次轻暗标量S_NL被预测为长寿命的,提供了两个轻子或喷流的位移顶点加上丢失的横向能量的独特实验特征。

英文摘要:

The requirements of electroweak symmetry breaking (EWSB) and correct thermal relic density of Dark Matter (DM) predict large spin-independent direct detection cross section in scalar DM models based on underlying SO(10) non-supersymmetric GUT. Interpreting the CDMS signal events as DM recoil on nuclei, we study implications of this assumption on EWSB, Higgs boson mass and direct production of scalar DM at LHC experiments. We show that this interpretation indicates relatively light DM, M_DM ~ O(100) GeV, with large pair production cross section at LHC in correlation with the spin-independent direct DM detection cross section. The next-to-lightest dark scalar S_NL is predicted to be long-lived, providing distinctive experimental signatures of displaced vertex of two leptons or jets plus missing transverse energy.

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