Electroweak baryogenesis and dark matter from a singlet Higgs
Electroweak baryogenesis and dark matter from a singlet Higgs
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DOI：
10.1088/1475-7516/2013/01/012
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发表时间：
2012-10
影响因子：
6.4
通讯作者：
J. Cline;K. Kainulainen
中科院分区：
文献类型：
--
作者：
J. Cline;K. Kainulainen
如果希格斯玻色子H通过？M| H| 2S 2时，可以通过在零温度下已经存在的大势垒诱导强的电弱相变。在这种情况下，可以解析地计算相变的性质。我们表明，电弱重子可以实现使用CP违反从一个维度-6运营商，耦合S的顶夸克质量，抑制了一个新的物理尺度，可以远高于1 TeV。此外，单线态是暗物质的候选者，其残余密度是总暗物质密度的3%，但它与核的相互作用足够强烈（通过希格斯交换），刚好低于当前的XENON 100极限。DM质量预计将在80？160 GeV。
If the Higgs boson H couples to a singlet scalar S via ?m|H|2S2, a strong electroweak phase transition can be induced through a large potential barrier that exists already at zero temperature. In this case properties of the phase transition can be computed analytically. We show that electroweak baryogenesis can be achieved using CP violation from a dimension-6 operator that couples S to the top-quark mass, suppressed by a new physics scale that can be well above 1 TeV. Moreover the singlet is a dark matter candidate whose relic density is 3% of the total dark matter density, but which nevertheless interacts strongly enough with nuclei (through Higgs exchange) to be just below the current XENON100 limits. The DM mass is predicted to be in the range 80?160 GeV.