Strange quark, tachyonic gluon masses and |Vus| from hadronic tau decays

被引：17

作者：

Narison, S ^{[1
]}

机构：

[1] Univ Montpellier 2, Lab Phys Theor & Astrophys, F-34095 Montpellier, France

来源：

PHYSICS LETTERS B | 2005年 / 626卷

关键词：

D O I：

10.1016/j.physletb.2005.08.085

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We apply, to the new OPAL data on V + A strange spectral functions, a suitable combination of QCD spectral sum rules directly sensitive to the combination of strange quark (m(s)) and tachyonic gluon (gimel(2)) masses. Using the mean value of gimel(2) from a sum rule analysis of different channels, we deduce the invariant strange quark mass (m) over cap (s) = (106(-37)(+33)) MeV to order alpha(3)(s), which leads to the running mass (m) over cap (s) (2 GeV) = (93(-32)(+29)) MeV. We also obtain an interesting though less accurate estimate of the CKM angle: vertical bar V-us vertical bar = 0.217 +/- 0.019. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：101 / 110

页数：10

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