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arXiv · 1808.01969

Updating m_c,b(m_c,b) from SVZ-Moments and their Ratios

Stephan Narison·LUPM-CNRS-Montpellier
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Abstract

Using recent values of \alpha_s, the gluon condensates <\alpha_s G^2> and and the new data on the \psi/\Upsilon-families, we update our determinations of the MS-bar running quark masses m_c,b(m_c,b) from the SVZ-Moments M_n(Q^2) and their ratios by including higher order perturbative (PT) corrections, non-perturbative (NPT) terms up to dimension d=8 and using the degree n-stability criteria of the (ratios of) moments. Optimal results from different (ratios of) moments converge to the accurate mean values: m_c(m_c)=1264(6) MeV} and m_b(m_b)=4188(8) MeV in Table 4, which improve and confirm our previous findings [1,2] and the recent ones from Laplace sum rules [3]. Comments on some other determinations of m_c(m_c) and <\alpha_s G^2> from the SVZ-(ratios of) moments in the vector channel are given in Section 5.

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Stephan Narison, LUPM-CNRS-Montpellier. 2018-08-06. Updating m_c,b(m_c,b) from SVZ-Moments and their Ratios. https://doi.org/10.1016/j.physletb.2018.08.003

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