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arXiv 1707.01503hep-phhep-ex
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与非守恒流耦合的暗力

Dark forces coupled to non-conserved currents

Jeff A. Dror, Robert Lasenby, Maxim Pospelov

摘要:

如果新的光矢量与标准模型态的耦合是四维的,那么它们的产生速率(能量/矢量质量)就会增加^2,除非它们耦合的电流是守恒的。这些过程使我们能够得到新的约束条件的耦合,这些向量,这是显着强于以前的文献中的各种各样的模型。例子包括与夸克轴向耦合的矢量,以及与只被手征反常破坏的流(如重子数)耦合的矢量。我们的新极限来自一系列过程,包括罕见的Z衰变和味道改变介子衰变,并排除了一些唯象动机的建议。

英文摘要:

New light vectors with dimension-4 couplings to Standard Model states have (energy / vector mass)^2 enhanced production rates unless the current they couple to is conserved. These processes allow us to derive new constraints on the couplings of such vectors, that are significantly stronger than the previous literature for a wide variety of models. Examples include vectors with axial couplings to quarks and vectors coupled to currents (such as baryon number) that are only broken by the chiral anomaly. Our new limits arise from a range of processes, including rare Z decays and flavor changing meson decays, and rule out a number of phenomenologically-motivated proposals.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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