====== TTP09-16 Charm and Bottom Quark Masses: an Update ======
 
 
   <hidden 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.
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|**K. G. Chetyrkin, J. H. K&uuml;hn, A. Maier, P. Maierh&ouml;fer, 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]]   |
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