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arXiv 0811.1214hep-ph
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标准模型及以后B -> K* mu+ mu-衰变的对称性和非对称性

Symmetries and Asymmetries of B -> K* mu+ mu- Decays in the Standard Model and Beyond

Wolfgang Altmannshofer, Patricia Ball, Aoife Bharucha, Andrzej J. Buras, David M. Straub, Michael Wick

摘要:

稀有衰变B -> K*(-> K pi)mu+ mu-被认为是B物理的关键通道之一,因为K* 的偏振允许精确的角度重建,从而产生许多可观测量,这些可观测量为标准模型及其扩展提供了新的重要测试。这些角观测量可以用CP守恒量和CP破坏量来表示,我们用光锥上QCD求和规则计算的完整形状因子来研究,包括QCD因子化修正。我们调查的背景下,标准模型和各种新物理模型,特别是最小的希格斯模型与T-宇称和各种MSSM的情况下,确定这些观测量与小到中度的依赖强子量和大的影响新物理。我们的研究的一个重要结果是,新的CP破坏阶段将产生干净的信号CP破坏不对称。我们还确定了各种可观测量之间的一些相关性,这将允许不同的新物理场景之间的明确区分。

英文摘要:

The rare decay B -> K* (-> K pi) mu+ mu- is regarded as one of the crucial channels for B physics as the polarization of the K* allows a precise angular reconstruction resulting in many observables that offer new important tests of the Standard Model and its extensions. These angular observables can be expressed in terms of CP-conserving and CP-violating quantities which we study in terms of the full form factors calculated from QCD sum rules on the light-cone, including QCD factorization corrections. We investigate all observables in the context of the Standard Model and various New Physics models, in particular the Littlest Higgs model with T-parity and various MSSM scenarios, identifying those observables with small to moderate dependence on hadronic quantities and large impact of New Physics. One important result of our studies is that new CP-violating phases will produce clean signals in CP-violating asymmetries. We also identify a number of correlations between various observables which will allow a clear distinction between different New Physics scenarios.

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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