Chargino contributions in light of recent epsiron'/epsiron
Chargino contributions in light of recent epsiron'/epsiron
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Chargino 根据最近的 epsiron/epsiron 做出的贡献
DOI：
10.1016/j.physletb.2016.10.009
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Kei Yamamoto
中科院分区：
文献类型：
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作者：
Motoi Endo;Satoshi Mishima;Daiki Ueda;Kei Yamamoto
最近，对标准模型预测的ε′/ ε进行了改进，并在2.9σ水平上与实验结果存在差异。我们研究了电荷量对Z企鹅的贡献，特别是在真空稳定性约束下。研究了真空衰减率，结果表明，如果超粒子的质量小于4-6 TeV，就可以解释这种差异。还讨论了与B （K L→π 0 ν ν¯）和其他实验约束的关系。
Recently, the standard model prediction of ϵ′/ϵ was improved, and a discrepancy from the experimental results was reported at the 2.9σ level. We study the chargino contributions to Z penguin especially with the vacuum stability constraint. The vacuum decay rate is investigated, and it is shown that the discrepancy can be explained if superparticles are lighter than 4–6 TeV. Correlations with B (K L→ π 0 ν ν¯) and other experimental constraints are also discussed.