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Up sector of minimal flavor violation: top quark properties and direct D meson CP violation

机译:最小的风味违规的扇区:顶部夸克属性和直接<重点类型=“斜体”> D Meson CP 违规

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A bstract Minimal Flavor Violation in the up-type quark sector leads to particularly interesting phenomenology due to the interplay of flavor physics in the charm sector and collider physics from flavor changing processes in the top sector. We study the most general operators that can affect top quark properties and D meson decays in this scenario, concentrating on two CP violating operators for detailed studies. The consequences of these effective operators on charm and top flavor changing processes are generically small, but can be enhanced if there exists a light flavor mediator that is a Standard Model gauge singlet scalar and transforms under the flavor symmetry group. This flavor mediator can satisfy the current experimental bounds with a mass as low as tens of GeV and explain observed D -meson direct CP violation. Additionally, the model predicts a non-trivial branching fraction for a top quark decay that would mimic a dijet resonance.
机译:由于魅力部门和碰撞器物理来自顶部部门的风味改变过程,因此Quark夸克扇区中的Bstract最小味道违规导致风味物理学的相互作用。我们研究了最常见的运营商,可以影响这种情况下的顶级夸克属性和D MESON衰减,专注于两个CP违反运营商进行详细研究。这些有效运营商对魅力和顶级风味改变过程的后果通常很小,但如果存在一个是标准模型计量标量标标标量和变换,可以提高,但可以提高风味对称组。这种风味介体可以满足当前实验界,质量低至数十的GEV,并解释观察到的D-MESON直接CP违规。另外,该模型预测了用于模拟Dijet谐振的顶部夸克衰减的非普通分支分数。

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