Measuring cal B(D^+ --> mu^+ nu) and the Pseudoscalar Decay Constant f_D^+
High Energy Physics - Experiment
2010-04-08 v2
Abstract
In 60 inverse-pb of data taken on the psi(3770) resonance with the CLEO-c detector, we find 8 D+ -> mu+ nu decay candidates that are mostly signal, containing only 1 estimated background. Using this statistically compelling sample, we measure a value of B(D+ -> mu+ nu) = (3.5 +/- 1.4 +/- 0.6) x10^(-4), and determine fD+=(202 +/- 41 +/-17) MeV.
Cite
@article{arxiv.hep-ex/0411050,
title = {Measuring cal B(D^+ --> mu^+ nu) and the Pseudoscalar Decay Constant f_D^+},
author = {G. Bonvicini and CLEO Collaboration},
journal= {arXiv preprint arXiv:hep-ex/0411050},
year = {2010}
}
Comments
18 pages postscript,also available through http://www.lns.cornell.edu/public/CLNS/2004/, submitted to PRD