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Measurement of the Bc± Meson Lifetime Using Bc±->J/ψ+l±+X Decays

Hartz, Mark (2009) Measurement of the Bc± Meson Lifetime Using Bc±->J/ψ+l±+X Decays. Doctoral Dissertation, University of Pittsburgh. (Unpublished)

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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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Item Type: University of Pittsburgh ETD
Status: Unpublished
CreatorsEmailPitt UsernameORCID
Hartz, Markmah17@pitt.eduMAH17
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairShepard, Paulshepard@pitt.eduSHEPARD
Committee MemberLeibovich, Adamakl2@pitt.eduAKL2
Committee MemberBoudreau, Joeboudreau@pitt.eduBOUDREAU
Committee MemberPaulini,
Committee MemberPaolone,
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:, etd-11112008-155653
Date Deposited: 10 Nov 2011 20:04
Last Modified: 15 Nov 2016 13:51


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