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Current status of τ -mass measurements (PDG-2005) The world average is dominated by the BES results KEDR collaboration made analysis of the BES data and it was shown that the confidence interval quoted by BES was underestimated by factor 2÷1.5 (Nucl. Phys. B 144(2005)20) BES collaboration did not agree with this statement (published in the same issue)
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