Strange quark mass from pseudoscalar sum rule with \(O(\alpha_s^4)\) accuracy

We include the new, five-loop, O(αs4) correction into the QCD sum rule used for the s-quark mass determination. The pseudoscalar Borel sum rule is taken as a study case. The OPE for the correlation function with N4LO, O(αs4) accuracy in the perturbative part, and with dimension d≤6 operators reveals...

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Veröffentlicht in:	The European physical journal. C, Particles and fields Particles and fields, 2006-06, Vol.46 (3), p.721-728
Hauptverfasser:	Chetyrkin, K G, Khodjamirian, A
Format:	Artikel
Sprache:	eng
Schlagworte:	Correlation analysis Quantum chromodynamics Quarks Sum rules
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