arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0705.0283hep-lat
收藏

O(a)改进的重-轻算子的格重整化

Lattice renormalisation of O(a) improved heavy-light operators

Benoit Blossier

摘要:

在重夸克有效理论的框架下,给出了${\cal O}(a)$改进的静态光流在单圈微扰理论阶下的重整化常数的解析表达式和数值.静态夸克用HYP作用量描述,轻夸克用Clover或Neuberger作用量描述.这些因素是相关的提取从晶格计算的衰减常数$f_B$,$f_{B_S}$和袋参数$B_i$与$B-\bar{B}$混合现象在标准模型和超越。

英文摘要:

The analytical expressions and the numerical values of the renormalisation constants of ${\cal O}(a)$ improved static-light currents are given at one-loop order of perturbation theory in the framework of Heavy Quark Effective Theory: the static quark is described by the HYP action and the light quark is described either with the Clover or the Neuberger action. These factors are relevant to extract from a lattice computation the decay constants $f_B$, $f_{B_S}$ and the set of bag parameters $B_i$ associated with $B-\bar{B}$ mixing phenomenology in the Standard Model and beyond.

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。

↑