¥Our studies of T0
vertexing were carried out using run 10920.
¥Run 10920 is a long run,
with about 63 sequences, taken on 1/28/03 with a B+ field.
¥We have used Spec Vertex
to compare the silicon vertex with the T0 vertex. and selected only events for
which the Spec Vertex is located between ±20 cm.
¥For events with a valid
spec vertex the Oct dE vertex and Spec Vertex agree within a resolution of 1.0
cm (1 s).