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

Exclusive Initial-State-Radiation Production of the $D ar D$, $D ar D^*$, and $D^* ar D^*$, Systems - High Energy Physics - Experiment - Download this document for free, or read online. Document in PDF available to download.

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 $Y4260\to D^* \bar D^*$.

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

Source: https://arxiv.org/