The identification of the light mesons in the HADES spectrometer is based on an invariant mass reconstruction of their decay into e(+)e(-) pairs. In the dilepton (e(+)e(-)) signal reconstruction, particularly important is the reduction of a huge combinatorial background arising from wrong combinations of e(+) and e(-) to unlike sign pairs. Methods of the dilepton signal and combinatorial background reconstruction in the HADES spectrometer will be presented.
Dilepton analysis in the HADES spectrometer for C-12+C-12 at 2 AGEV
SPATARO, STEFANO GIOVANNI;
2005-01-01
Abstract
The identification of the light mesons in the HADES spectrometer is based on an invariant mass reconstruction of their decay into e(+)e(-) pairs. In the dilepton (e(+)e(-)) signal reconstruction, particularly important is the reduction of a huge combinatorial background arising from wrong combinations of e(+) and e(-) to unlike sign pairs. Methods of the dilepton signal and combinatorial background reconstruction in the HADES spectrometer will be presented.
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