Münster 2002 – wissenschaftliches Programm
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HK: Physik der Hadronen und Kerne
HK 12: Poster Session: Electromagentic and Hadronic Probes
HK 12.6: Poster
Dienstag, 12. März 2002, 10:30–12:45, Foyer Chemie
The Search for Excited Glue with Antiproton Beams — •C. Schwarz — GSI, Darmstadt
One of the main thrusts of the recently proposed High Energy Storage Ring (HESR) for antiprotons at GSI [1] is the search for gluonic excitations in the charmonium mass range. Beams of cooled antiprotons with momenta of 1.5 to 15 GeV/c on an internal target allow the search for charmed hybrids and glueballs up to a mass of 5.5 GeV/c2. Here, all states are directly populated and allow a measurement with a mass resolution of δ m/m ≈ 10−5. In the charmed region the number of resonances is relatively small and the relative decay widths are narrower than in the light quark sector. Hence, unambigous identification of the production and formation experiments is easily performed. The proposed detector is capable to measure electrons, gammas, and the hadronic final states. Above points and implicated good particle identification based on imaging Cherenkov detectors (DIRC,Aerogel Counters) is emphasized in the present poster This concept of particle identification has been proven to work by GEANT4 simulations. The measurement of hadronic channels will allow a selective filtering of final states with gluonic (bosonic) degrees of freedom.
[1] Conceptual Design Report: http://www.gsi.de/GSI-Future