Improved Measurement of the Pseudoscalar Decay Constant (1998)
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BibTeX
@MISC{Collaboration98improvedmeasurement,
author = {Cleo Collaboration},
title = {Improved Measurement of the Pseudoscalar Decay Constant},
year = {1998}
}
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Abstract
We present a new determination of f Ds using 5 million e + e \Gamma ! cc events obtained with the CLEO II detector. Our value is derived from our new measured ratio \Gamma(D + s ! ¯ + )=\Gamma(D + s ! OEß + ) = 0:173 \Sigma 0:021 \Sigma 0:031. Using B(D + s ! OEß + ) = (3:6 \Sigma 0:9)%, we extract f Ds = (280 \Sigma 17 \Sigma 25 \Sigma 34) MeV. We compare this result with various model calculations. PACS number(s): 1320.Fc, 13.20.-v M. Chadha, 1 S. Chan, 1 G. Eigen, 1 J. S. Miller, 1 C. O'Grady, 1 M. Schmidtler, 1 J. Urheim, 1 A. J. Weinstein, 1 F. Wurthwein, 1 D. W. Bliss, 2 G. Masek, 2 H. P. Paar, 2 S. Prell, 2 V. Sharma, 2 D. M. Asner, 3 J. Gronberg, 3 T. S. Hill, 3 D. J. Lange, 3 R. J. Morrison, 3 H. N. Nelson, 3 T. K. Nelson, 3 D. Roberts, 3 A. Ryd, 3 R. Balest, 4 B. H. Behrens, 4 W. T. Ford, 4 H. Park, 4 J. Roy, 4 J. G. Smith, 4 J. P. Alexander, 5 R. Baker, 5 C. Bebek, 5 B. E. Berger, 5 K. Berke...
