We present a method to perform a least squares fit of a decay chain involving multiple decay vertices. Our technique allows for the simultaneous extraction of decay time, position and momentum parameters and their uncertainties and correlations for all particles in a decay chain.
Cite
@article{arxiv.physics/0503191,
title = {Decay Chain Fitting with a Kalman Filter},
author = {W. D. Hulsbergen},
journal= {arXiv preprint arXiv:physics/0503191},
year = {2009}
}