Charm Physics Performance Studies for PANDA
Abstract
The study of the charmonium (cbar c) system is a powerful tool to understand the strong interaction. In pbar p annihilations studied with PANDA, the mass and width of the charmonium state, such as hc, will be measured with an excellent accuracy, determined by the very precise knowledge of the momentum, p, beam resolution (dp/p=10e(-4)-10e(-5)) and not limited by the resolution of the detector. The analysis of hc demonstrates the feasibility to accurately determine a specific final state in the spectrum of charmed mesons. The preliminary background analysis of the pbar p -> pi0 pi0 pi0 decay competing with a signal channel pbar p -> hc -> etac + gamma -> (pi0 + pi0 + eta) + gamma is under control. A comparison of three decay modes of charmonium hc via the electromagnetic transition is presented.
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