Hartz, Mark
(2009)
Measurement of the Bc± Meson Lifetime Using Bc±->J/ψ+l±+X Decays.
Doctoral Dissertation, University of Pittsburgh.
(Unpublished)
Abstract
This thesis describes a measurement of the average proper decay time of the B±c mesons, the ground state of bottom and charm quark bound states. The lifetime measurement is carried out in the decay modes B±c -> J/ψ+e±+X and B±c -> J/ψ+μ±+X, where the J/ψ decays as J/ψ -> μ+μ- and the X are unmeasured particles such as νe or νμ. The data are collect by the CDF II detector which measures the properties of particles created in sqrt(s)=1.96 TeV proton/antiproton collisions delivered by the Fermilab Tevatron. This measurement uses ~fb-1 of integrated luminosity. The measured average proper decay time of B±c mesons, τ = 0.475+0.053-0.049(stat.)±0.018(syst.) ps, is competitive with the most precise measurements in the world and confirms previous measurements and theoretical predictions.
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Details
Item Type: |
University of Pittsburgh ETD
|
Status: |
Unpublished |
Creators/Authors: |
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ETD Committee: |
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Date: |
28 January 2009 |
Date Type: |
Completion |
Defense Date: |
11 November 2008 |
Approval Date: |
28 January 2009 |
Submission Date: |
11 November 2008 |
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: |
background modeling; fitting techniques |
Other ID: |
http://etd.library.pitt.edu/ETD/available/etd-11112008-155653/, etd-11112008-155653 |
Date Deposited: |
10 Nov 2011 20:04 |
Last Modified: |
15 Nov 2016 13:51 |
URI: |
http://d-scholarship.pitt.edu/id/eprint/9633 |
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