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 — preprints:2009:ttp09-16 [2016/03/17 11:03] (current) Line 1: Line 1: + ====== TTP09-16 Charm and Bottom Quark Masses: an Update ====== + + + Using new four-loop results for the heavy quark vacuum polarization and new data for bottom quark production in electron-positron annihilation, an update on the determination of charm- and bottom-quark masses through sum rules has been performed. The previous result for the charm-quark mass, $m_c(3 {\rm GeV})= 0.986(13) {\rm GeV}$, based on the lowest moment, is supported by the new results from higher moments which lead to consistent values with comparable errors. The new value for the bottom quark, $m_b(10 {\rm GeV})= 3.610(16) {\rm GeV}$, corresponding to $m_b(m_b)= 4.163(16) {\rm GeV}$, makes use both of the new data and the new perturbative results and is consistent with the earlier determination. + + |**K. G. Chetyrkin, J. H. Kühn, A. Maier, P. Maierhöfer, P. Marquard, M. Steinhauser, C. Sturm**  | + |**  Phys.Rev.   D80 074010 2009  **  | + | {{preprints:2009:ttp09-16.pdf|PDF}} {{preprints:2009:ttp09-16.ps|PostScript}} [[http://arxiv.org/abs/0907.2110|arXiv]]   | + | |