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arXiv 0906.1879hep-ph
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最近D- \bar D混合测量的经验教训

Lessons from Recent Measurements of D-\bar D Mixing

Oram Gedalia, Yuval Grossman, Yosef Nir, Gilad Perez

摘要:

近年来,D- \bar D混合参数的测量取得了令人瞩目的进展。我们探讨这些测量的新物理模型的影响,特别是在最近的上限的CP破坏的量。我们更新了不可重整化的四夸克算子的约束。我们表明,实验接近探测最小的味道违反模型与大tan β。数据挑战模型具有TeV级的规模,其中向下扇区中的味道违反通过对齐来抑制,特别是某些类别的超对称模型和扭曲的额外维度模型。

英文摘要:

An impressive progress in measurements of the D-\bar D mixing parameters has been made in recent years. We explore the implications of these measurements to models of new physics, especially in view of recent upper bounds on the amount of CP violation. We update the constraints on non-renormalizable four-quark operators. We show that the experiments are close to probing minimally flavor violating models with large tan beta. The data challenge models with a scale of order TeV where the flavor violation in the down sector is suppressed by alignment and, in particular, certain classes of supersymmetric models and of warped extra dimension models.

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