b物理的qcd計(jì)算

1、 學(xué)號：200906301001 分類號 O57 碩 士 學(xué) 位 論 文 B 物理的 QCD 計(jì)算 研 究 生 姓 名 ：姜憲奎 指 導(dǎo) 教 師：李作宏 學(xué) 科 門 類：理學(xué) 專 業(yè) 名 稱：粒子物理與原子核物理 論文提交日期：2012 年 3 月 27 日 煙 臺(tái) 大 學(xué) 碩 士 學(xué) 位 論 文 II Abstract The QCD sum rule is a kind of nonperturbati

2、ve approach raised by Shifman, V ainshtein and Zakharov in the late 1970s. Hadron observables are described as the parameters of the vacuum nature ,so people can answer the question about the nature of the hadron. And QC

3、D sum rules developed into a powerful tool in hadron physics and nuclear physics research. In this thesis, we mainly focus on the application of light-cone sum rule in studying rare decay. In the light-cone sum rule appr

4、oach, the uncertainty of the 3 twist ?light-cone distribution amplitude is very large. So , we adopt the chiral current to improve the correlation function, remove the contribution of 3 twist ?light-cone distribution a

5、mplitude, so we chose improved correlation function by Chiral current to remove the contribution from 3 twist ?distribution amplitudes and figured out ? ?2 T f q by including perturbative correction to the 2 twist ?te