Darmstadt 2016 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 25: Heavy Ion Collision and QCD Phases VII
HK 25.5: Vortrag
Dienstag, 15. März 2016, 17:45–18:00, S1/01 A4
Kalman filter based approach for reconstruction of short-lived particles — •Maksym Zyzak1,2,3 and Ivan Kisel1,2,3 for the CBM collaboration — 1GSI Helmholtzzentrum für Schwerionenforschung GmbH — 2Frankfurt Institute for Advanced Studies — 3Goethe-Universität Frankfurt
Today the most interesting physics of the heavy-ion experiments is hidden in the properties of short-lived particles, that can be reconstructed only through their decay products — daughter particles. Short-lived particles that have a very small production probability or small branching ratio of the channel, which is suitable for registration, are usually of the particular interest.
In order to process accurately events of the experiment interest, the algorithms for particles reconstruction should be efficient, that requires precise mathematical estimations. The KF Particle package for the CBM experiment, which is based on the Kalman filter method, provides rich and mathematically correct functionality for reconstruction of decays. It allows to obtain physical parameters of the particle as well as their errors. Also, KF Particle contains the mass and topological constraints, which are of the particular importance for reconstruction of decay trees like multi-strange hyperons and resonances.