(Marc asked me to post his thesis to the CDF web page for convenient
electronic access.  Here it is ...)


====

A Measurement of B Meson Oscillations Using Inclusive
Leptons in Proton-Antiproton Collisions at 1.8 TeV

Marc David Peters
Doctor of Philosophy in Physics
University of California, Berkeley
Professor Marjorie D. Shapiro, Chair 

May, 1997

The mass difference $\dmd = M(B^0_H)-M(B^0_L)$ is measured from the
time dependence of \Bd--\Bdbar\ oscillations, using 
data from the CDF experiment's inclusive electron and muon samples,
collected during the 1994--1995 Fermilab Tevatron \ppb\ collider
Run. Leptons are associated with a displaced vertex to 
select events from \bbb\ production. The proper time is reconstructed
from the position, momentum, and invariant mass of the vertex. 
The final state of the $b$ hadron is determined from the charge of the
trigger lepton; the initial state is determined by soft lepton and jet
charge flavor-tagging. The combined fit of the electron and muon
datasets using both flavor-tagging methods yields 
$\dmd = 0.47 \pm 0.06 \pm 0.04~\mathrm{ps}^{-1}$,
where the first error is statistical and the second error is
systematic. This corresponds to a value of
$\xd\equiv\frac{\dmd}{\Gamma_{\Bd}}=0.73\pm0.10\pm0.07$, where
$\Gamma_{\Bd} = 0.64\pm0.02~\mathrm{ps}^{-1}$.




Posted to /cdf/pub/thesis/cdf6013_mdpeters_thesis.ps
    http://www-cdf.fnal.gov/thesis/cdf6013_mdpeters_thesis.ps

Posted by ashmansk@cdfsga