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arXiv 0904.1869hep-ph
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介子混合与CKM唯象学讲座三

Three Lectures on Meson Mixing and CKM phenomenology

Ulrich Nierste

摘要:

本文介绍了介子-反介子混合理论,以供将来从事味物理实验或相关理论研究的学生参考。本文导出了中性介子系统的时间演化公式,并给出了在标准模型中如何计算混合时中性介子本征态和CP相的质量差和宽度差。特别强调的是CP破坏,这是详细介绍了K混合,Bd混合和Bs混合。我解释了对幺正三角形顶点(ρ bar,η bar)的约束,这些约束由Δ_K,Delta m_{B_d},Delta m_{B_d} /(Delta m_{B_s})和各种混合诱导的CP不对称性,如a_CP(Bd-bar -> J/psi K_short)(t)暗示。还示出了在风味特异性Bd衰变中的CP破坏的未来测量的影响。

英文摘要:

I give an introduction to the theory of meson-antimeson mixing, aiming at students who plan to work at a flavour physics experiment or intend to do associated theoretical studies. I derive the formulae for the time evolution of a neutral meson system and show how the mass and width differences among the neutral meson eigenstates and the CP phase in mixing are calculated in the Standard Model. Special emphasis is laid on CP violation, which is covered in detail for K mixing, Bd mixing and Bs mixing. I explain the constraints on the apex (rho-bar,eta-bar) of the unitarity triangle implied by epsilon_K, Delta m_{B_d}, Delta m_{B_d}/(Delta m_{B_s}) and various mixing-induced CP asymmetries such as a_CP(Bd-bar -> J/psi K_short)(t). The impact of a future measurement of CP violation in flavour-specific Bd decays is also shown.

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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