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A bound on the charm chromo-EDM and its implications

机译:魅彩-EDM的界限及其含义

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摘要

We derive bounds on the electric and chromo-electric dipole moments of the charm quark. The second one turns out to be particularly strong, and we quantify its impact on models that allow for a sizeable flavour violation in the up quark sector, like flavour alignment and Generic U(2) 3 . In particular we show how the bounds coming from the charm and up CEDMs constrain the size of new physics contributions to direct flavour violation in D decays. We also specialize our analysis to the cases of Supersymmetry with split families and composite Higgs models. The results exposed in this paper motivate both an increase in experimental sensitivity to fundamental hadronic dipoles, and a further exploration of the SM contribution to flavour violating D decays.
机译:我们得出了夸克的电偶极子和色子偶极矩的界。第二个结果特别强大,我们量化了其对模型的影响,这些模型允许在上夸克领域出现较大的风味违规行为,例如风味对齐和Generic U(2)3。特别是,我们展示了来自魅力和上层CEDM的边界如何限制D衰变中新的物理成分对直接违反风味的贡献。我们还专门针对具有分裂族和复合希格斯模型的超对称情况进行分析。本文所揭示的结果既激励了对基本强子偶极子的实验灵敏度的提高,又进一步探索了SM对违反D衰减的风味的贡献。

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