Lattice determination of the K ? ( p p ) I = 2 decay amplitude A 2
Lattice determination of the K ? ( p p ) I = 2 decay amplitude A 2
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K 的晶格测定
DOI：
10.1103/physrevd.86.074513
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发表时间：
2012
影响因子：
5
通讯作者：
Blum T
中科院分区：
文献类型：
--
作者：
Blum T
我们描述了一个介子衰变为两个同位旋格式的介子的振幅的计算。结果发表在[T.Blum，Phys.莱特牧师。分析63个胶子组态的108,141601(2012)PRLTAO0031-900710.1103/PhysRevLett.108.141601]被更新为146个组态，给出了IMA2=-6.54(46)STAT(120)10-13 GeV.与实验结果很好地符合，而其值是未知的。我们还致力于在标准模型内直接计算首次出现的振幅，我们的结果可以与实验结果相结合，并给出。结果表明，弱电企鹅对Re(ε‘/ε)的贡献为：-(6.25±0.44stat±1.19syst)×10~(-4)。
We describe the computation of the amplitudefor a kaon to decay into two pions with isospin <?format ?>. The results presented in [T. Blum , Phys. Rev. Lett. 108, 141601 (2012)PRLTAO0031-900710.1103/PhysRevLett.108.141601] from an analysis of 63 gluon configurations are updated to 146 configurations givingand ImA2=-6.54(46)stat(120)syst10-13 GeV.is in good agreement with the experimental result, whereas the value ofwas hitherto unknown. We are also working toward a direct computation <?format ?>of theamplitudebut, within the Standard Model, our result forcan be combined with the experimental results for,andto give. Our result forimplies that the electroweak penguin (EWP) contribution tois Re(ε′/ε)EWP=-(6.25±0.44stat±1.19syst)×10-4.