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arXiv 0812.1368hep-lat
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手征微扰理论、K到π π衰变和2+1味畴壁QCD

Chiral perturbation theory, K to pi pi decays and 2+1 flavor domain wall QCD

Shu Li, Norman H. Christ

摘要:

我们提出了一个计算的低能常数描述的实部和虚部的$K \to ππ$衰减幅度$A_0$和$A_2$。领导和下一个领导阶手征微扰理论和它的适用性评估。统计误差和系统误差的组合限制了结果的精度。手征微扰理论的明显局限性引起了人们对可能外推到物理$K \to ππ$运动学的准确性的怀疑。

英文摘要:

We present a calculation of the low energy constants describing the real and imaginary parts of the $K \to ππ$ decay amplitudes $A_0$ and $A_2$. Leading and next leading order chiral perturbation theory is used and its applicability assessed. A combination of statistical and systematic errors limits the precision of the results. The apparent limitations of chiral perturbation theory raise doubts about the accuracy of a possible extrapolation to physical $K \to ππ$ kinematics.

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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