美丽迷人的彩色偶极时刻
Beautiful and charming chromodipole moments
摘要：
在标准模型有效场论的背景下，我们推导出涉及底夸克和粲夸克的色偶极算符的直接和间接界。我们发现，实验上限的中子电偶极矩提出了严格的约束的虚部的威尔逊系数的两个chromodipole运营商。威尔逊系数的大小，而不是只有弱约束的dijet搜索和Z-玻色子生产与底夸克喷注。风味物理学没有提供有意义的界限。
英文摘要：
In the context of the Standard Model effective field theory we derive direct and indirect bounds on chromodipole operators involving the bottom and charm quark. We find that the experimental upper limit on the neutron electric dipole moment puts severe constraints on the imaginary parts of the Wilson coefficients of both chromodipole operators. The magnitudes of the Wilson coefficients are instead only weakly constrained by dijet searches and Z-boson production in association with bottom-quark jets. Flavour physics does not provide meaningful bounds.
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