# Exclusive Initial-State-Radiation Production of the $D ar D$, $D ar D^*$, and $D^* ar D^*$, Systems - High Energy Physics - Experiment

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Abstract: We perform a study of the exclusive production of $D \bar D$, $D \bar D^*$,and $D^* \bar D^*$ in initial-state-radiation events, from $e^+ e^-$annihilations at a center-of-mass energy near 10.58 GeV, to search forcharmonium and possible new resonances. The data sample corresponds to anintegrated luminosity of 384 $fb^{-1}$ and was recorded by the BaBar experimentat the PEP-II storage rings. The $D \bar D$, $D \bar D^*$, and $D^* \bar D^*$mass spectra show clear evidence of several $\psi$ resonances. However, thereis no evidence for $Y4260 \to D \bar D^*$ or $Y4260\to D^* \bar D^*$.

Autor: The BABAR Collaboration: B. Aubert, et al

Fuente: https://arxiv.org/