Flavor Tagging for $B_s$ Mixing using Fragmenation Tracks at CDF

$B_s$ Mixing is one of the major analysis within the physics program
at the Fermilab Tevatron collider. We present here the development
of a b-flavor tagger which largely enhances the sensitivity power
of the CDF experiment to observe Bs oscillations. This b-quark
flavor tagging algorithm is based on the charge correlation between
the signal B meson and the fragmentation tracks produced nearby.
Relying on simulation events, we evaluate the performance of this
tagger on fully reconstructed Bu, Bd and Bs decay modes, and compare
with the data results in the Bu and Bd decay modes.