2017 February 09
2017 August 03
The Belle II experiment at SuperKEKB is rapidly approaching its data taking phase, where it will be used to perform precision measurements of the Standard Model. Accurate vertex reconstruction is an essential tool for precise measurements of particle observables and for background suppression in such an experiment. We discuss the available vertex fitting methods in the Belle II Analysis Software Framework and their performance, as well as introduce a Kalman-based global fitting approach aimed at improving resolutions for underconstrained decay trees.