Grid Development and a Study of B-flavour tagging at D�

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Run IIa of the D0 experiment at the Tevatron took place between Spring 2002 and Spring 2006, collecting approximately 1.2 fb{sup -1} of data. A fundamental principal of the D0 computing model is the utilization of globally distributed computing resources as part of a grid. In particular use is made of the 'SAMGrid'. The first part of this thesis describes the work undertaken at Imperial College on several D0 distributed computing projects. These included the deployment and development of parts of the SAMGrid software suite, and participation in the Winter 2003/2004 data reprocessing effort. One of the major goals of ... continued below

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158 pages

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Lewis, Philip William & /Imperial Coll., London September 1, 2006.

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Description

Run IIa of the D0 experiment at the Tevatron took place between Spring 2002 and Spring 2006, collecting approximately 1.2 fb{sup -1} of data. A fundamental principal of the D0 computing model is the utilization of globally distributed computing resources as part of a grid. In particular use is made of the 'SAMGrid'. The first part of this thesis describes the work undertaken at Imperial College on several D0 distributed computing projects. These included the deployment and development of parts of the SAMGrid software suite, and participation in the Winter 2003/2004 data reprocessing effort. One of the major goals of the D0 experiment is the observation of mixing in the B{sub s}{sup 0}-meson system. The measurement of the mixing frequency is important as it can be used to constrain the CKM matrix, which describes CP violation in the Standard Model. The second part of this thesis describes the development of an opposite side flavour tagging algorithm and its calibration using B{sup +} and B{sub d}{sup 0} meson decays. The application of this algorithm to an analysis of the B{sub s}{sup 0} meson system is then described, which lead to the world's first two-sided limit on the B{sub s}{sup 0} meson oscillation frequency ({Delta}m{sub s}) which was measured to lie in the interval between 17 ps{sup -1} and 21 ps{sup -1} at the 90% confidence level.

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158 pages

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  • Report No.: FERMILAB-THESIS-2006-76
  • Grant Number: AC02-07CH11359
  • DOI: 10.2172/948185 | External Link
  • Office of Scientific & Technical Information Report Number: 948185
  • Archival Resource Key: ark:/67531/metadc899882

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  • September 1, 2006

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  • Sept. 27, 2016, 1:39 a.m.

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  • Dec. 9, 2016, 4:49 p.m.

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Lewis, Philip William & /Imperial Coll., London. Grid Development and a Study of B-flavour tagging at D�, thesis or dissertation, September 1, 2006; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc899882/: accessed September 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.