Determination of the CKM element (Vub)
| dc.contributor.author | Fortin, Domininque | |
| dc.contributor.supervisor | Kowalewski, Robert | |
| dc.date.accessioned | 2009-12-14T23:05:48Z | |
| dc.date.available | 2009-12-14T23:05:48Z | |
| dc.date.copyright | 2005 | en |
| dc.date.issued | 2009-12-14T23:05:48Z | |
| dc.degree.department | Department of Physics and Astronomy | |
| dc.degree.level | Doctor of Philosophy Ph.D. | en |
| dc.description.abstract | The precise determination of the CKM matrix element |Vub| is crucial in testing the Standard Model mechanism for CP violation. From a sample of 88 million BB pairs collected with the MBAR detector, charmless semileptonic B decays are selected using simultaneous requirements on the electron energy, Ee, and the invariant mass squared of the electron-neutrino pair, q2. The partial branching fraction, unfolded for detector effects, is determined in a region of the q2-Ee plane where the dominating semileptonic decays to charm mesons are highly suppressed. Theoretical calculations based on the Heavy Quark Expansion allows for a determination of |Vub| = (3.95 ± 0.27 +0.58 -0:42 ± 0.25) x 10 3, where the errors represent experimental, heavy quark parameters and theoretical uncertainties, respectively. | en |
| dc.identifier.uri | http://hdl.handle.net/1828/1971 | |
| dc.language | English | eng |
| dc.language.iso | en | en |
| dc.rights | Available to the World Wide Web | en |
| dc.subject | particles | en |
| dc.subject | leotons | en |
| dc.subject | nuclear physics | en |
| dc.subject.lcsh | UVic Subject Index::Sciences and Engineering::Physics | en |
| dc.title | Determination of the CKM element (Vub) | en |
| dc.type | Thesis | en |