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Measurement of exclusive B lifetimes in the modes B+ to J/psi K+, B+ to J/psi K*+, B0 to J/psi K*, and B0 to J/psi K0 short, and measurement of the B+/B0 lifetime ratio

Flores-Castillo, Luis Roberto (2004) Measurement of exclusive B lifetimes in the modes B+ to J/psi K+, B+ to J/psi K*+, B0 to J/psi K*, and B0 to J/psi K0 short, and measurement of the B+/B0 lifetime ratio. Doctoral Dissertation, University of Pittsburgh. (Unpublished)

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Abstract

This thesis presents the results from the measurement of the lifetimes of charged and neutral B mesons in four final statesin proton-antiproton collisions at a center-of-mass energy of 1.96 TeV using 195 inverse-picobarns of data collected with the CDF detector at the Fermilab Tevatron Collider. The proper decay length is estimated using the J/psi vertex in all cases to reduce the systematics in the ratio.For the Bu meson, the mean life (ctau) is determined to be 499 +- 12 +- 6 microns; for the neutral B meson (Bd), 446+-15+-8 microns. In both measurements, the first error is statistical and the second is systematic. The ratio between Bu and Bd meson lifetimes is found to be 1.119 +- 0.046(stat) +- 0.014(syst).

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Details

Item Type: University of Pittsburgh ETD
Status: Unpublished
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Flores-Castillo, Luis Robertolrfst7@pitt.eduLRFST7
Date: 23 September 2004
Date Type: Completion
Defense Date: 13 July 2004
Approval Date: 23 September 2004
Submission Date: 13 August 2004
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Institution: University of Pittsburgh
Schools and Programs: Dietrich School of Arts and Sciences > Physics
Degree: PhD - Doctor of Philosophy
Thesis Type: Doctoral Dissertation
Refereed: Yes
Uncontrolled Keywords: B lifetimes; CDF; Fermilab; Heavy Quark Expansion; High Energy Physics; lifetime ratio
Other ID: http://etd.library.pitt.edu/ETD/available/etd-08132004-145732/, etd-08132004-145732
Date Deposited: 10 Nov 2011 19:59
Last Modified: 15 Nov 2016 13:49
URI: http://d-scholarship.pitt.edu/id/eprint/9077

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