Strange quark mass from sum rules with improved perturbative QCD\n convergence

2013/05/16 by S. Bodenstein, Bodenstein, Sebastian, C. A. Domínguez +3
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.1305.3796

openalex publication_date 2013/05/16 · openalex created_date 2022/10/04 · openalex updated_date 2026/07/28

Abstract

The strange quark mass is determined from a QCD Finite Energy Sum Rule (FESR)\noptimized to reduce considerably the systematic uncertainties arising from the\nhadronic resonance sector, as well as from the poor convergence of the\npseudoscalar correlator in perturbative QCD. The former is achieved by\nintroducing a suitable integration kernel in the Cauchy integral in the complex\nsquared energy plane. The latter is obtained by optimizing the perturbative\nexpansion to accelerate its convergence. The result for the strange quark mass\nin the \MS scheme at a scale of 2 GeV is m_s(2 GeV) = (94 \± 9)MeV.\n

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