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Abstract: Using CLEO data collected at 3370 MeV and 4170 MeV, we determine fD = 205.8+- 8.5 +- 2.5 MeV and an interim preliminary value of fDs = 267.9 +- 8.2 +-3.9 MeV, where both results are radiatively corrected. They agree with therecent most precise unquenched Lattice-QCD calculation for the D+, but do notfor the Ds. Several consequences are discussed.



Autor: Liming Zhang the CLEO Collaboration

Fuente: https://arxiv.org/







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