$σ(e^+e^-\to{hadrons})$ and the Heavy Quark Masses

Details $σ(e^+e^-\to{hadrons})$ and the Heavy Quark Masses $σ(e^+e^-\to{hadrons})$ and the Heavy Quark Masses

2002-11-04

arxiv.org/abs/hep-ph/0211035v1

Nucl.Phys.Proc.Suppl.116:58-62,2003

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, talk presented at RADCOR/Loops and Legs 2002

Scientific paper

10.1016/S0920-5632(03)80144-5

The precise data for the total cross section $\sigma(e^+e^-\to{hadrons})$ from the charm threshold region, when combined with the evaluation of moments with three loop accuracy, lead to a direct determination of the short distance $\bar{\rm MS}$ charm quark mass $m_c(m_c)=1.304(27)$. Applying the same approach to the bottom quark we obtain $m_b(m_b)=4.191(51)$ GeV. A complementary method for the determination of $m_b$ is based of the analysis of the $\Upsilon(1S)$ system which is confronted with a next-to-next-to-next-to-leading order calculation of the corresponding energy level. This leads to $m_b(m_b)=4.346(70)$ GeV.

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