Electron identification in Au+Au collisions at 1.23 GeV/u using multivariate analysis

FAIR NExt generation of ScientistS 2013

Harabasz, Szymon^1,2

Technische Universität Darmstadt, Schlossgartenstraße 9, 64289 Darmstadt, Germany^1

Jagiellonian University, ul. Reymonta 4, 30-059 Kraków, Poland^2

关键词: Au+Au collisions;    Electron identification;    Identification method;    Multi variate analysis;    Physics analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/503/1/012014/pdf
DOI  :  10.1088/1742-6596/503/1/012014

来源: IOP

【 摘 要 】

Au+Au collisions at a beam kinetic energy of 1.23 GeV/u have been measured by HADES in 2012. Lepton identification in this experiment has been done using a multivariate algorithm based on an artificial neural network. In the proceedings, details of the identification method and its assessment in terms of purity of the final lepton sample are presented. The obtained purity reaches 95% and the amount of identified electrons and positrons is sufficient to perform further steps of the physics analysis with e+e-pairs.