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Measurements of D and Ds decay constants at CLEO · Around

2008

Measurements of D and Ds decay constants at CLEO

Zhang, Liming

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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.

Built on

E. Follana et al
2005
Earlier work this paper cites.
W.-M. Yao et al
2006
Earlier work this paper cites.

Similar

K. Abe et al
Original
2007
Cited alongside, same era.
J. L. Rosner and S. Stone, “Decay Constants of Charged Pseudoscalar Mesons,” arXiv:0802.1043 [hep-ex], also in PDG 2008
Original
2008
Cited alongside, same era.
For notational convenance, the D − D^{-} is referred to for the fully reconstructed tag, although D + D^{+} states are also used
Cited in the paper.
B. A. Dobrescu and A. S. Kronfeld, arXiv:0803.0512 [hep-ph]
Original
Cited in the paper.

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B. I. Eisenstein, et al
2008
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K. M. Ecklund et al
2008
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