The jet multiplicity distribution compared to the expected background

Here we show the number of events before SVX tagging (circles), the number of tags observed (triangles), and the expected number of background tags (hatched) versus jet multiplicity. Based on the excess number of tags in events with jets, we expect an additional 0.5 and 5 tags from decay in the 1 and 2 jet bins respectively. The inset shows the secondary vertex proper time distribution for the 27 tagged jets in the W + -jet data (triangles) compared to the expectation for b quark jets from decay.