Parts | Days | Selection | Search | Downloads | Help

HK: Fachverband Hadronen und Kerne

HK 35: Hadron Structure and Spectroscopy II

HK 35.3: Talk

Tuesday, March 17, 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 2³P_J-charmonium resonances (χ_cJ(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 χ_c2(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).