Two measurements of the Cabibbo-Kobayashi-Maskawa angle γ using B → DK and B<sup>0</sup> → DK<sup>*0</sup> decays are presented in this thesis. The subsequent D meson decays to the K<sub>S</sub><sup>0</sup>π<sup>+</sup>π<sup>â</sup> and K<sub>S</sub><sup>0</sup>K<sup>+</sup>K<sup>â</sup> final states are studied using a binned Dalitz plot analysis. The D strong-phase variation over the Dalitz plot is taken from measurements performed at the CLEO-c experiment, making the analysis independent of a model to describe the D decay amplitude. Both measurements are performed using proton-proton collision data collected by the Large Hadron Collider beauty (LHCb) experiment in 2011 and 2012, corresponding to an integrated luminosity of 3 fb<sup>â1</sup> at centre-of-mass energies √s = 7 TeV and 8 TeV. The value γ= (62 <sup>+15</sup><sub style='position: relative; left: -1.7em;'>â14</sub>)° is measured using B<sup>0</sup> → DK<sup>*0</sup> decays and γ = (71 ± 20)° is measured using B<sup>0</sup> → DK<sup>*0</sup> decays, with a second solution for each value corresponding to γ + 180°. The measurements are consistent with the world average value of γ.
| Identifer | oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:724887 |
| Date | January 2016 |
| Creators | Cheung, Shu-Faye |
| Contributors | Harnew, Neville ; Malde, Sneha |
| Publisher | University of Oxford |
| Source Sets | Ethos UK |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Source | https://ora.ox.ac.uk/objects/uuid:414ae71c-d72e-45bb-93fa-36afba4ae9a4 |
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