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Bochum 2009 – wissenschaftliches Programm

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HK: Fachverband Hadronen und Kerne

HK 35: Hadron Structure and Spectroscopy II

HK 35.3: Vortrag

Dienstag, 17. März 2009, 17:30–17:45, H-ZO 30

Search for Charmonium Resonances in γγ → DD at BaBar — •Torsten Schröder — Institut für Experimentalphysik I, Ruhr-Universität Bochum

We present the search for radially excited charmonium resonances at BaBar. The analysis is based on a data sample of 385 fb−1 taken with the BaBar detector at the asymmetric e+e collider PEP-II (SLAC). The large available data set in combination with the instrumentation of the BaBar detector provides excellent conditions for meson spectroscopy.

The masses of the radially excited 23PJ-charmonium resonances (χcJ(2P)) are predicted in the region around 4 GeV/c2. The Belle collaboration has observed the Z(3930) in two-photon production, which is a candidate for the χc2(2P) state. In this presentation, the results of the search for the Z(3930) and other resonances above a mass of 3.7 GeV/c2 in the process γγ → Z(3930) → DD at BaBar are discussed.

Supported by bmb+f (06BO9041).

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