Köln 2004 – scientific programme

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HK: Physik der Hadronen und Kerne

HK 12: Poster Session: Instrumentation and Applications

HK 12.39: Poster

Tuesday, March 9, 2004, 13:30–15:30, Foyer

Results of Simulations on the TRD Physics Performance — •Tariq Mahmoud — Physikalisches Institut, Universität Heidelberg, Germany

One of the main physics objectives of the ALICE Transition Radiation Detector (TRD) is the measurement of quarkonia states via the di-electron decay channel.

From prototype tests we obtain a pion rejection factor in the order of 100. With this electron identification capability, the TRD will allow to sufficiently suppress the hadronic background present in high energy nucleus collisions.
Performance parameters for fast simulations were determined as function of angles, momenta and multiplicities of the ALICE central barrel for Quarkonia in a realistic background environment. This was achieved using space point resolutions from test beam measurements in conjuction with microscopic simulations of the Inner Tracking System, the Time Projection Chamber and the TRD.
We report on our results and show how the TRD improves the Quarkonia signals.