Measurement of B(Ds+ -> l plus v) and the decay constant fDs+ from 600 pb(-1) of e(+)e(-) annihilation data near 4170 MeV

We examine e+e-→Ds-Ds*+ and Ds*-Ds+ interactions at 4170 MeV using the CLEO-c detector in order to measure the decay constant fDs+ with good precision. Previously our measurements were substantially higher than the most precise lattice based QCD calculation of (241± 3)MeV. Here we use the Ds+→+ν cha...

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Bibliographic Details
Main Authors:	Alexander, J, Cassel, D, Duboscq, J, Ehrlich, R, Fields, L, Galik, R, Gibbons, L, Gray, R, Gray, S, Hartill, D, Heltsley, B, Hertz, D, Hunt, J, Kandaswamy, J, Kreinick, D, Kuznetsov, V, Ledoux, J, Mahlke-Krueger, H, Mohapatra, D, Patterson, JR, Peterson, D, Riley, D, Ryd, A, Sadoff, A, Shi, X
Format:	Journal article
Language:	English
Published:	2009

Measurement of B(Ds+ -&gt; l plus v) and the decay constant fDs+ from 600 pb(-1) of e(+)e(-) annihilation data near 4170 MeV

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Measurement of B(Ds+ -> l plus v) and the decay constant fDs+ from 600 pb(-1) of e(+)e(-) annihilation data near 4170 MeV