Backtracking algorithm for lepton reconstruction with HADES - INSPIRE

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Backtracking algorithm for lepton reconstruction with HADES

HADES

Collaboration

•

P. Sellheim
(
- Frankfurt U.
)

for the collaboration.

Apr 23, 2015

5 pages

Part of Proceedings, 3rd FAIR Next generation ScientistS (FAIRNESS 2014) : Vietri sul Mare, Italy, September 22-27, 2014

Published in:

J.Phys.Conf.Ser. 599 (2015) 1, 012027

Contribution to:

- FAIRNESS 2014

Published: Apr 23, 2015

DOI:

10.1088/1742-6596/599/1/012027

Experiments:

GSI-HADES

reference search8 citations

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Abstract: (IOP)

The High Acceptance Di-Electron Spectrometer (HADES) at the GSI Helmholtzzentrum für Schwerionenforschung investigates dilepton and strangeness production in elementary and heavy-ion collisions. In April - May 2012 HADES recorded 7 billion Au+Au events at a beam energy of 1.23 GeV/u with the highest multiplicities measured so far. The track reconstruction and particle identification in the high track density environment are challenging. The most important detector component for lepton identification is the Ring Imaging Cherenkov detector. Its main purpose is the separation of electrons and positrons from large background of charged hadrons produced in heavy-ion collisions. In order to improve lepton identification this backtracking algorithm was developed. In this contribution we will show the results of the algorithm compared to the currently applied method for e(+/-)identification. Efficiency and purity of a reconstructed e(+/-) sample will be discussed as well.

HADES
particle identification
track data analysis
efficiency
background
RICH
data analysis method

References(11)

Figures(0)

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