Strange Quark Mass Dependence of the Tau Hadronic Width
Joaquim Prades, Antonio Pich
Abstract
The perturbative quark mass corrections to the tau hadronic width are studied to O(alphas3 mq2). Including up to dimension four corrections, we get ms(4 GeV2)=(143 42) MeV [ms(1 GeV2)=(193 59) MeV ]. Possible improvements to reduce the theoretical uncertainty are pointed out.
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