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Title: Measurements of B(Ds -> lvl) and fDs using data collected from the BaBar experiment
Authors: Randle-Conde, Aidan
Advisors: Khan, A
Keywords: BaBar;Ds Meson;Leptonic decays;Decay constant;Quantum chromodynamics
Issue Date: 2010
Publisher: Brunel University School of Engineering and Design PhD Theses
Abstract: This thesis presents measurements of the branching fractions B(Ds -> lvl) and measurements of the pseudoscalar decay constant, fDs , using all the data acquired at the BaBar detector at SLAC National Accelerator Laboratory, which were collected from September 1999 to April 2007, and comprised 531 fb-1. The following mea- surements are made: B(Ds -> eve) = (6:11 +/-0:38 +/- 0:33) * 10-3, B(Ds -> tvt) = (5:06 +/- 0:34 +/- 0:50) * 10-2 , and a limit B(Ds -> eve) < 1:46 * 10-4 is obtained. Using these measurements a value of fDs = 252 +/- 6 +/- 7 +/- 1MeV is obtained, where the first uncertainties account for the statistical limitations of the data, the second uncertainties account for the systematic uncertainties, and the third uncertainties account for uncertainties associated with other physical constants (dominated by the lifetime of the Ds meson).
Description: This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.
Appears in Collections:Brunel University Theses
Electronic and Computer Engineering
Dept of Electronic and Computer Engineering Theses

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