Gießen 2007 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 19: Physik mit schweren Ionen

HK 19.3: Talk

Tuesday, March 13, 2007, 17:30–17:45, F

Strategies for electron pair reconstruction in CBM⁺ — •Tetyana Galatyuk, Supriya Das, and Claudia Höhne for the CBM collaboration — Gesellschaft für Schwerionenforschung mbH, Planckstr. 1, 64291 Darmstadt, Germany

Lepton pairs emitted out of the hot and dense stage of relativistic heavy ion collisions are established probes to study the electromagnetic structure of hadrons under extreme conditions. The reconstruction of low-mass vector mesons by means of their electromagnetic decay is one of the experimental goals of the planned Compressed Baryonic Matter (CBM) experiment at the future facility FAIR. We present our strategies to reduce the combinatorial background in electron pair measurements in central Au+Au collisions at 25 AGeV with the CBM experimental setup. A special challenge of the current concept is the fact that electron identification is not provided in front of the magnetic field.
⁺Supported by EU-FP6 HADRONPHYSICS