NNNLO determination of the bottom-quark mass from non-relativistic sum rules
نویسندگان
چکیده
The mass of the bottom quark can be determined with high precision from moments of the pair-production cross section σ(e+e− → bb̄) near threshold. We present the first complete NNNLO determination from non-relativistic sum rules, obtaining a bottom-quark mass of mPS b (2GeV) = 4.532 +0.013 −0.039 GeV in the potential-subtracted scheme. For the mass in the MS scheme we find mMS b (m MS b ) = 4.203 +0.016 −0.034 GeV using the recently computed four-loop correction to the scheme conversion.
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تاریخ انتشار 2016