2026-09-23T04:42:17Zhttps://bura.brunel.ac.uk/oai/request

oai:bura.brunel.ac.uk:2438/63252014-11-01T12:53:39Zcom_2438_23com_2438_58com_2438_8621com_2438_8620col_2438_3672col_2438_186col_2438_8623

Khan, A Randle-Conde, Aidan 2012-03-26T09:50:59Z 2012-03-26T09:50:59Z 2010 http://bura.brunel.ac.uk/handle/2438/6325 This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University. 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). Submitted by Lesh Gowreesunker (lesh.gowreesunker@brunel.ac.uk) on 2012-03-26T09:50:48Z No. of bitstreams: 1 Fulltext.pdf: 3609162 bytes, checksum: 3c51277f9e78e600f0ae16e29fe199bf (MD5) Approved for entry into archive by Lesh Gowreesunker(lesh.gowreesunker@brunel.ac.uk) on 2012-03-26T09:50:59Z (GMT) No. of bitstreams: 1 Fulltext.pdf: 3609162 bytes, checksum: 3c51277f9e78e600f0ae16e29fe199bf (MD5) Made available in DSpace on 2012-03-26T09:50:59Z (GMT). No. of bitstreams: 1 Fulltext.pdf: 3609162 bytes, checksum: 3c51277f9e78e600f0ae16e29fe199bf (MD5) This work is funded by the Science and Technology Facilities Council en Brunel University School of Engineering and Design PhD Theses http://bura.brunel.ac.uk/bitstream/2438/6325/1/FulltextThesis.pdf BaBar Ds Meson Leptonic decays Decay constant Quantum chromodynamics Measurements of B(Ds -> lvl) and fDs using data collected from the BaBar experiment Thesis