Top-flavored dark matter and the forward-backward asymmetry
Top-flavored dark matter and the forward-backward asymmetry
复制标题
顶级暗物质和前后不对称性
DOI：
10.1103/physrevd.87.095006
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发表时间：
2013
影响因子：
5
通讯作者：
S. Tulin
中科院分区：
文献类型：
--
作者：
Abhishek Kumar;S. Tulin
我们提出了一个简单的模型，其中暗物质（DM）进行顶味和夫妇的标准模型通过顶夸克的框架内的最小味违反（MFV）。顶味DM可以解释在Tevatron观察到的异常顶部前后不对称性，同时与对撞机上的其他顶部观测值保持一致。由于它与top的大耦合，DM获得了与Z玻色子的相当大的环耦合，并且残余密度由通过Z玻色子的湮灭来确定。我们还讨论了目前的直接检测搜索的约束，强调自旋相关的搜索探测这种情况下的作用。
We propose a simple model where dark matter (DM) carries top flavor and couples to the Standard Model through the top quark within a framework of minimal flavor violation (MFV). Top-flavored DM can explain the anomalous top forward-backward asymmetry observed at the Tevatron, while remaining consistent with other top observables at colliders. By virtue of its large coupling to top, DM acquires a sizable loop coupling to the Z boson, and the relic density is set by annihilation through the Z. We also discuss contraints from current direct detection searches, emphasizing the role of spin-dependent searches to probe this scenario.