τ轻子衰变率的质量修正
高能物理 - 唯象学
2015-06-25 v1
摘要
在本注中，我们采用微扰QCD和算符乘积展开研究了τ轻子的总强子衰变率的辐射修正。我们计算了二次夸克质量修正到衰变率比，阶数为，发现它们对τ轻子的Cabbibo抑制衰变模式有显著贡献。我们还讨论了质量维度D=4的修正，其中我们强调了需要选择合适的夸克和胶子凝聚体的重整化标度。
引用
@article{arxiv.hep-ph/9805232,
title = {Mass Corrections to the Tau Decay Rate},
author = {K. G. Chetyrkin and A. Kwiatkowski},
journal= {arXiv preprint arXiv:hep-ph/9805232},
year = {2015}
}
备注
13 pages, LaTeX, no figures. This version fixes a typo in eq. (25) of the original paper (Z. Phys. C59 (1993) 525) and an errror in a numerical integration procedure which has resulted to a significant increase of the O(\alpha_s^2) coefficient in eq. (27). As a consequence also some tables in Section 4 have been modified