多重夸克脱落的运行耦合
高能物理 - 唯象学
2010-03-26 v2
摘要
构建了用于多重夸克同时脱落的尺度不变运行耦合，无需参考中间阈值。大动量尺度亦可包含其中。结果是 renormalization group 的一种多尺度推广，可适用于任意阶次。这种做法可避免常规脱落程序中单一运行耦合的不一致问题，例如在抵消t,b夸克对原子核轴向电荷的异常修正时所出现的情形。
关键词
引用
@article{arxiv.hep-ph/0507278,
title = {Running couplings for the simultaneous decoupling of heavy quarks},
author = {Steven D. Bass and R. J. Crewther and F. M. Steffens and A. W. Thomas},
journal= {arXiv preprint arXiv:hep-ph/0507278},
year = {2010}
}
备注
12 pages, 1 figure, version to appear in PLB. Pages 8-11 and Fig. 1 are new, with consequent changes to the abstract, page 2, and the references. We show that our multi-scale renormalization group is needed to achieve anomaly cancellation in t,b decoupling from the weak neutral current, and extend it to include large momenta