On the treatment of energy loss in track fitting
Paper: 169
Session: A (talk)
Speaker: Fruehwirth, Rudolf, Institute of High Energy Physics, Vienna
Keywords: algorithms
On the treatment of energy loss in track fitting
R. Fruehwirth
Institut fuer Hochenergiephysik der
Oesterreichischen Akademie der Wissenschaften
Nikosldorfer Gasse 18, A-1050 Wien
Abstract
The energy loss of electrons in matter is characterized by a
distribution which is strongly non-Gaussian. The Kalman filter is
therefore not the optimal track fitting procedure. We show that the
estimation of momentum can be improved by using non-linear methods
like the Gaussian-sum filter and the Metropolis--Hastings algorithm.
We report results of a simple simulation experiment and comment on
the respective merits of these methods.