State-of-the-Art Calculation of the Decay Rate of Electroweak Vacuum in the Standard Model
State-of-the-Art Calculation of the Decay Rate of Electroweak Vacuum in the Standard Model
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DOI：
10.1103/physrevlett.119.211801
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发表时间：
2017-11-21
影响因子：
8.6
通讯作者：
Shoji, Yutaro
中科院分区：
文献类型：
--
作者：
Chigusa, So;Moroi, Takeo;Shoji, Yutaro
利用规范理论中亚稳真空衰变率的最新进展，在粒子物理标准模型（SM）的框架下计算了电弱真空的衰变率.我们给出了一个明显的规范不变的衰减率的表达式。我们还进行了详细的数值计算的衰变率。利用SM参数的最佳拟合值，我们发现EW真空的单位体积衰变率约为10（-554）Gyr（-1）Gpc（-3）;在顶质量不确定的情况下，衰变率估计为10（-284）-10（-1371）Gyr（-1）Gpc（-3）。
The decay rate of the electroweak (EW) vacuum is calculated in the framework of the standard model (SM) of particle physics, using the recent progress in the understanding of the decay rate of metastable vacuum in gauge theories. We give a manifestly gauge-invariant expression of the decay rate. We also perform a detailed numerical calculation of the decay rate. With the best-fit values of the SM parameters, we find that the decay rate of the EW vacuum per unit volume is about 10(-554) Gyr(-1) Gpc(-3); with the uncertainty in the top mass, the decay rate is estimated as 10(-284)-10(-1371) Gyr(-1) Gpc(-3).