Determining the strange quark mass in Cabibbo-suppressed τ lepton decays

被引：83

作者：

Chetyrkin, KG

Kuhn, JH

Pivovarov, AA

机构：

[1] Univ Karlsruhe, Inst Theoret Teilchenphys, D-7500 Karlsruhe 1, Germany

[2] Univ Mainz, Inst Phys, D-55099 Mainz, Germany

来源：

NUCLEAR PHYSICS B | 1998年 / 533卷 / 1-3期

关键词：

quantum chromodynamics; perturbative calculations; strange quark mass;

D O I：

10.1016/S0550-3213(98)00511-2

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

In this work radiative corrections in the total hadronic decay rate of the tau lepton and some moments of its differential distributions are studied employing perturbative QCD and the operator product expansion. We calculate quadratic quark mass corrections in the strange mass to the decay rate ratio R-tau to the order O(alpha(s)(3)m(2)) and find that they contribute appreciably to the Cabibbo-suppressed decay modes of the tau lepton. Using the results of a recent experimental analysis, we obtain m(s) (1 GeV) = 200 +/- 40(exp) +/- 30(th) MeV. (C) 1998 Elsevier Science B.V.

引用

页码：473 / 493

页数：21

共 33 条

[1] QCD ANALYSIS OF THE TAU-HADRONIC WIDTH [J].