Tracking and vertexing in BELLE II

Abstract

Belle II is a next generation B-factory experiment at the SuperKEKB collider. In early 2019 the fully operational detector will start taking data. The goal is to collect a statistics 50 times larger than the one collected by its predecessor Belle, namely an integrated luminosity of 50 ab−1. Belle II is designed for detecting and reconstructing particle trajectories for transverse momenta exceeding 50 MeV/c while providing excellent momentum resolution over a wide range of momentum. In this contribution, the tracking and vertexing algorithms implemented in the Belle II software framework are presented, together with the performances on simulated Υ(4S) → BB̄ events and on data collected during the detector commissioning phase.