The Cross section of e+ e- annihilation into hadrons of order alpha(s)**4 n(f)**2 in perturbative QCDстатья
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Дата последнего поиска статьи во внешних источниках: 29 мая 2015 г.
Аннотация:We present the first genuine QCD five-loop calculation of the vacuum polarization functions: analytical terms of order α4sn2f to the absorptive parts of vector and scalar correlators. These corrections form an important gauge-invariant subset of the full O(α4s) correction to e+e- annihilation into hadrons and the Higgs decay rate into hadrons, respectively. They discriminate between different widely used estimates of the full result.