Berlin 2005 – scientific programme

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HK: Physik der Hadronen und Kerne

HK 11: Physik mit schweren Ionen

HK 11.3: Group Report

Friday, March 4, 2005, 17:15–17:45, TU MA042

The Compressed Baryonic Matter (CBM) Experiment at FAIR — •Volker Friese — Gesellschaft für Schwerionenforschung mbH Darmstadt

The goal of the proposed Compressed Baryonic Matter (CBM) experiment at the future Facility for Antiproton and Ion Research (FAIR) in Darmstadt is to explore the QCD phase diagram in the region of the highest baryon densities. The beam energy range (up to 45 AGeV (35 AGeV) for nuclei with Z = 0.5A (0.4 A)) is well suited to study fundamental aspects of QCD including the chiral and deconfinement phase transition at high baryon densities, the critical endpoint of the deconfinement phase transition, the properties of highly compressed baryonic matter and the in-medium properties of hadrons. The corresponding key observables include low-mass vector mesons decaying into electron-positron pairs which serve as penetrating probes, hidden and open charm produced at threshold beam energies, (multi-) strange hyperons, and global features like collective flow of hadrons and event-by-event fluctuations of observables. The CBM detector is designed as a universal instrument measuring both hadrons and electrons with large acceptance. Particular technical challenges are the operation of detectors at very high particle intensities and the handling of very high data rates. A status report will be presented.