Description
A kinematic fit package was developed based on Least Means Squared
minimization with Lagrange multipliers and Kalman filter techniques
and implemented in the framework of the CMS reconstruction program.
The package allows full decay chain reconstruction from final state
to primary vertex according to the given decay model. The class
framework allowing decay tree description on every reconstruction
step will be described in details. Package extension to any type of
physics object reconstructed in CMS, integration to general CMS
reconstruction framework and related questions will be discussed.
Examples of decay chain models, constraints and their application
on Bs reconstruction will be presented.
Authors
Mr
K. Prokofiev
(Physik-Institut Universitat Zurich)
Dr
T. Speer
(Physik-Institut Universitat Zurich)
