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arXiv 1005.0761hep-phastro-ph.HEhep-ex
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SUSY暗物质在CDMS II光下的结果:不同模型的比较研究

SUSY dark matter in light of CDMS II results: a comparative study for different models

Junjie Cao, Ken-ichi Hikasa, Wenyu Wang, Jin Min Yang, Li-Xin Yu

摘要:

本文比较研究了三种常用的超对称模型:极小模型(MSSM)、次极小模型(NMSSM)和近似极小模型(nMSSM)下中性伴子暗物质与核子的散射。首先,我们通过对宇宙暗物质遗迹密度的测量、对希格斯玻色子和S粒子的对撞机搜寻、精确的电弱测量和μ子反常磁矩等各种直接和间接的约束条件所允许的参数空间进行扫描,给出了弹性截面的预言。然后,我们证明了允许的参数空间与/不从CDMS II的新的限制的属性。我们得到以下观察结果:(i)对于每个模型,新的CDMS限制可以排除当前碰撞机约束所允许的大部分参数空间;(ii)允许的参数空间的属性对于MSSM和NMSSM是相似的,但是对于nMSSM是完全不同的;(iii)未来的SuperCDMS可以覆盖每个模型的大部分允许的参数空间。

英文摘要:

We perform a comparative study of the neutralino dark matter scattering on nucleon in three popular supersymmetric models: the minimal (MSSM), the next-to-minimal (NMSSM) and the nearly minimal (nMSSM). First, we give the predictions of the elastic cross section by scanning over the parameter space allowed by various direct and indirect constraints, which are from the measurement of the cosmic dark matter relic density, the collider search for Higgs boson and sparticles, the precision electroweak measurements and the muon anomalous magnetic moment. Then we demonstrate the property of the allowed parameter space with/without the new limits from CDMS II. We obtain the following observations: (i) For each model the new CDMS limits can exclude a large part of the parameter space allowed by current collider constraints; (ii) The property of the allowed parameter space is similar for MSSM and NMSSM, but quite different for nMSSM; (iii) The future SuperCDMS can cover most part of the allowed parameter space for each model.

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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