tau 强子宽度的奇异夸克质量依赖性
高能物理 - 唯象学
2009-10-31 v1
摘要
研究了微扰夸克质量修正对 tau 强子宽度的影响,精确到 O(alpha_s^3 m_q^2)。包括最高到维度四的修正,我们得到 m_s(4 GeV^2)=(143 \pm 42) MeV [m_s(1 GeV^2)=(193 \pm 59) MeV ]。指出了减少理论不确定性的可能改进方法。
引用
@article{arxiv.hep-ph/9811263,
title = {Strange Quark Mass Dependence of the Tau Hadronic Width},
author = {Joaquim Prades and Antonio Pich},
journal= {arXiv preprint arXiv:hep-ph/9811263},
year = {2009}
}
备注
Invited talk at High Energy Conference on Quantum Chromodynamics QCD'98, 2-8 July 1998, Montpellier (France). LaTeX, 8 pages with 3 ps figures