Improved measurement of the pseudoscalar decay constant f(D-s)

Improved measurement of the pseudoscalar decay constant f(D-s)

We present a new determination of fDs using 5 million e+e-→cc̄ events obtained with the CLEO II detector. Our value is derived from our new measured ratio Γ(D+s → μ+ν)/Δ(D+s → φπ+) = 0.173 ± 0.023 ± 0.035. Using ß(D+s → φπ+) = (3.6 ± 0.9)%, we extract fDs = (280 ± 19 ± 28 ± 34) MeV. We compare this...

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Bibliographic Details
Main Authors: Chada, M, Chan, S, Eigen, G, Miller, J, O'Grady, C, Schmidtler, M, Urheim, J, Weinstein, A, Wurthwein, F, Bliss, D, Masek, G, Paar, H, Prell, S, Sharma, V, Asner, D, Gronberg, J, Hill, T, Lange, D, Morrison, R, Nelson, H, Nelson, T, Roberts, D, Ryd, A, Balest, R, Behrens, B
Format: Journal article
Language:English
Published: 1998

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