Leptonic D and D_s Decays near c-cbar Threshold

Details Leptonic D and D_s Decays near c-cbar Threshold Leptonic D and D_s Decays near c-cbar Threshold

2007-11-16

arxiv.org/abs/0711.2660v1

ECONF C070805:30,2007

Physics

High Energy Physics

High Energy Physics - Experiment

6 pages, 6 figures, To be published in the proceedings of CHARM07, Ithaca, NY, August 5-8, 2007, eConf C070805

Scientific paper

We present recent results from the CLEO Collaboration on leptonic decay rates
of $D$ and $D_s$ near $c\bar{c}$ production threshold. From these decay rates,
we extract the decay constants, f_D = (222.6+-16.7^{+2.8}_{-3.4}) MeV, f_Ds =
(274+-10+-5) MeV, and the ratio f_Ds/f_D = 1.23+-0.11+-0.03.

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