Ph.D. Thesis by Petar Maksimovic

MASSACHUSETTS INSTITUTE OF TECHNOLOGY
Submitted: November 17, 1997
Degree awarded: February 1998

Title 
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Observation of pi-B meson Charge-flavor Correlations and
Measurement of Time Dependent B^0Bbar^0 Mixing in p-pbar Collisions

Advisor: Prof. Paraskevas A. Sphicas

Abstract
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We present a study of time-dependent B^0 - Bbar^0 mixing in p-pbar 
collisions at 1.8 TeV using 110 pb^-1 collected with the CDF detector 
at the Fermilab Tevatron Collider.

B mesons are partially reconstructed using the semileptonic decays 
B^0 -> l^+ D^(*)- X and B^+ -> l^+ Dbar^0 X (and their charge conjugates).
B meson-charged pion correlations are used in order to determine the 
flavor of the B meson at t = 0.  Such correlations are expected to arise 
from pions produced in the fragmentation chain and also from
B^** decays. We measure the efficiency and purity of this flavor tagging
method for both charged and neutral B mesons.


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