2008/06/24 by Sheldon Stone, Stone, Sheldon
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph) #hep-ex #hep-lat #hep-ph
paper · pdf · doi:10.48550/arxiv.0806.3921
4 pages, 6 figures, to appear in Proceedings of Flavor Physics and CP Violation 2008 (FPCP 2008), and Rencontres de Moriond QCD and High Energy Interactions (2008)
arxiv created 2008/06/24 · arxiv updated 2009/12/01
We update our previous results by increasing the luminosity, the efficiency, and for the Ds+ the number of tags. 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. We agree with the recent most precise unquenched Lattice-QCD calculation for the D+, but are in disagreement for the Ds+. Several consequences are discussed, including the possibility of physics beyond the Standard Model.