Track Finding Efficiency in BaBar

Understand

We describe several studies to measure the charged track reconstruction efficiency and asymmetry of the BaBar detector.

• The first two studies measure the tracking efficiency of a charged particle using $\tau$ and initial state radiation decays.
• The third uses the $\tau$ decays to study the asymmetry in tracking, the fourth measures the tracking efficiency for low momentum tracks, and the last measures the reconstruction efficiency of $K_S^0$ particles.
• The first section also examines the stability of the measurements vs BaBar running periods.