Measurements of D and Ds decay constants at CLEO

2008/10/13 by Liming Zhang, Zhang, Liming
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #hep-ex

paper · pdf · doi:10.48550/arxiv.0810.2328

Parallel talk at ICHEP'08, Philadelphia, USA, July 29 - August 5, 2008. 5 pages

arxiv created 2008/10/13 · arxiv updated 2009/12/01

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 the recent most precise unquenched Lattice-QCD calculation for the D+, but do not for the Ds. Several consequences are discussed.

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