New measurements of the D0 and D+ lifetimes
Abstract
A high statistics sample of photoproduced charm particles from the FOCUS(E831) experiment at Fermilab has been used to measure the D0 and D+ lifetimes. Using about 210000 D0 and 110000 D+ events we obtained the following values: 409.6 +/- 1.1 (statistical) +/- 1.5 (systematic) fs for D0 and 1039.4 +/- 4.3 (statistical) +/- 7.0 (systematic) fs for D+.
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