由三味QCD中$\Lambda$参数非微扰确定得到的强耦合常数
高能物理 - 格点
2017-09-13 v2 高能物理 - 实验
高能物理 - 唯象学
摘要
我们给出了三味QCD中参数以及Z玻色子极点质量处强耦合常数的格点确定。计算耦合常数在GeV到GeV范围内的非微扰跑动，并利用π介子和K介子的质量与衰变常数的实验输入值，我们得到MeV。直到极高能标的非微扰跑动保证了与微扰论相关的系统误差得到良好控制。利用的四圈预言，得出。
引用
@article{arxiv.1706.03821,
title = {The strong coupling from a nonperturbative determination of the $\Lambda$ parameter in three-flavor QCD},
author = {M. Bruno and M. Dalla Brida and P. Fritzsch and T. Korzec and A. Ramos and S. Schaefer and H. Simma and S. Sint and R. Sommer},
journal= {arXiv preprint arXiv:1706.03821},
year = {2017}
}
备注
Correction in the comparison to the LHC value for alpha(1.5TeV) which was given by CMS in the 5-flavor theory. The agreement is improved. Also 1 Reference added and a few typos corrected