Strange Quark Mass Dependence of the Tau Hadronic Width

Details Strange Quark Mass Dependence of the Tau Hadronic Width Strange Quark Mass Dependence of the Tau Hadronic Width

1998-11-06

arxiv.org/abs/hep-ph/9811263v1

Nucl.Phys.Proc.Suppl. 74 (1999) 309-312

Physics

High Energy Physics

High Energy Physics - Phenomenology

Invited talk at High Energy Conference on Quantum Chromodynamics QCD'98, 2-8 July 1998, Montpellier (France). LaTeX, 8 pages w

Scientific paper

10.1016/S0920-5632(99)00184-X

The perturbative quark mass corrections to the tau hadronic width are studied
to O(alpha_s^3 m_q^2). Including up to dimension four corrections, we get m_s(4
GeV^2)=(143 \pm 42) MeV [m_s(1 GeV^2)=(193 \pm 59) MeV ]. Possible improvements
to reduce the theoretical uncertainty are pointed out.

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