Supersymmetric Explanation of CP Violation in K→ππ Decays.
Supersymmetric Explanation of CP Violation in K→ππ Decays.
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KâÏi 衰变中 CP 破坏的超对称解释
DOI：
10.1103/physrevlett.117.091802
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发表时间：
2016
影响因子：
8.6
通讯作者：
P. Tremper
中科院分区：
文献类型：
--
作者：
T. Kitahara;U. Nierste;P. Tremper
最近的进展，在确定强子矩阵元揭示了测量值之间的紧张关系，它量化直接破坏衰变，和标准模型预测。在数量中编码的众所周知的间接违反通常排除了大的新物理学贡献，并挑战了这种差异的解释。我们证明了在夸克质量大于3TeV的最小超对称标准模型中，在没有超调的情况下，是有可能治愈反常的。这个解利用了超对称性的两个特征：大的同位旋破缺贡献的可能性（增强）和胶子的马约拉纳性质（允许抑制）。我们的解决方案不涉及相位或其他参数的微调。
Recent progress in the determination of hadronic matrix elements has revealed a tension between the measured value of, which quantifies directviolation indecays, and the standard-model prediction. The well-understood indirectviolation encoded in the quantitytypically precludes large new-physics contributions toand challenges such an explanation of the discrepancy. We show that it is possible to cure theanomaly in the minimal supersymmetric standard model with squark masses above 3 TeV without overshooting. This solution exploits two features of supersymmetry: the possibility of large isospin-breaking contributions (enhancing) and the Majorana nature of gluinos (permitting a suppression of). Our solution involves no fine-tuning ofphases or other parameters.